update referring to changeRequests from pull14038 containing: (#16785)
update referring to changeRequests from pull14038 containing: (#16785)

* update referring to changeRequests from https://github.com/ampproject/amphtml/pull/14038 containing:

render ads that are available but not rendered when the slot is above the fold and then scrolled into view
https://github.com/ampproject/amphtml/pull/14038/commits/8bbef696fa1e5dab078f12e1ee98a089b1b2ad14

render ads above the fold when scrolled to view
https://github.com/ampproject/amphtml/pull/14038/commits/197b1aa12559b819cd2c122749e35e46d1bdafb4

handle nobid, use promise-like pattern
https://github.com/ampproject/amphtml/pull/14038/commits/c336f63d51a6f7d153e855196d2190418d57605e

fix lint errors
https://github.com/ampproject/amphtml/pull/14038/commits/29d29d73333a8730d7197e6b04e36d05687943fb

remove whitespace
https://github.com/ampproject/amphtml/pull/14038/commits/65e2304c034c0b8dfd99af653302f717baceafcb

doc apntag.showTag
https://github.com/ampproject/amphtml/pull/14038/commits/a153ed593fef3323b1ab93733cd52aa6b4c11426

de-lint
https://github.com/ampproject/amphtml/pull/14038/commits/f88083e113074ffdf4bd3955f07094c32281fac9

fix check-types
https://github.com/ampproject/amphtml/pull/14038/commits/a5f31e3cb1a8818ba4847cfe03ddd5493a2cbdd9

* fixed linting errors

kamtschatka/amphtml,Gregable/amphtml,yandex-pcode/amphtml,lannka/amphtml,BenDz/amphtml,jmadler/amphtml,yandex-pcode/amphtml,jmadler/amphtml,Gregable/amphtml,sebastianbenz/amphtml,kamtschatka/amphtml,alanorozco/amphtml,taboola/amphtml,cory-work/amphtml,sharethrough/amphtml,tlong2/amphtml,yieldbot/amphtml,jridgewell/amphtml,alanorozco/amphtml,rsimha-amp/amphtml,taboola/amphtml,lannka/amphtml,smartadserver/amphtml,prateekbh/amphtml,voyagegroup/amphtml,zhangsu/amphtml,aghassemi/amphtml,widespace-os/amphtml,rsimha-amp/amphtml,yieldbot/amphtml,alanorozco/amphtml,jpettitt/amphtml,lannka/amphtml,sebastianbenz/amphtml,BenDz/amphtml,danielrozenberg/amphtml,zhangsu/amphtml,tlong2/amphtml,smartadserver/amphtml,BenDz/amphtml,yieldbot/amphtml,ampproject/amphtml,jmadler/amphtml,ampproject/amphtml,mhc-gh/amphtml,prateekbh/amphtml,pedjoni8/amphtml,voyagegroup/amphtml,cvializ/amphtml,lannka/amphtml,kamtschatka/amphtml,lannka/amphtml,honeybadgerdontcare/amphtml,zhouyx/amphtml,dotandads/amphtml,yandex-pcode/amphtml,jpettitt/amphtml,media-net/amphtml,media-net/amphtml,mhc-gh/amphtml,jpettitt/amphtml,techhtml/amphtml,jridgewell/amphtml,Gregable/amphtml,ampproject/amphtml,alanorozco/amphtml,chaveznvg/amphtml,voyagegroup/amphtml,jmadler/amphtml,erwinmombay/amphtml,cory-work/amphtml,taboola/amphtml,honeybadgerdontcare/amphtml,kamtschatka/amphtml,alanorozco/amphtml,taboola/amphtml,erwinmombay/amphtml,ampproject/amphtml,cory-work/amphtml,ampproject/amphtml,chaveznvg/amphtml,yandex-pcode/amphtml,media-net/amphtml,adup-tech/amphtml,prateekbh/amphtml,prateekbh/amphtml,sharethrough/amphtml,techhtml/amphtml,cvializ/amphtml,honeybadgerdontcare/amphtml,honeybadgerdontcare/amphtml,nexxtv/amphtml,smartadserver/amphtml,ampproject/amphtml,alanorozco/amphtml,widespace-os/amphtml,chaveznvg/amphtml,dotandads/amphtml,Gregable/amphtml,mhc-gh/amphtml,jpettitt/amphtml,Gregable/amphtml,taboola/amphtml,dotandads/amphtml,koshka/amphtml,koshka/amphtml,media-net/amphtml,src-code/amphtml,aghassemi/amphtml,adup-tech/amphtml,rsimha-amp/amphtml,jpettitt/amphtml,tlong2/amphtml,sebastianbenz/amphtml,dotandads/amphtml,widespace-os/amphtml,zhangsu/amphtml,src-code/amphtml,cory-work/amphtml,laterpay/amphtml,voyagegroup/amphtml,ampproject/amphtml,widespace-os/amphtml,danielrozenberg/amphtml,widespace-os/amphtml,mhc-gh/amphtml,rsimha-amp/amphtml,sharethrough/amphtml,sebastianbenz/amphtml,adup-tech/amphtml,laterpay/amphtml,src-code/amphtml,rsimha-amp/amphtml,laterpay/amphtml,laterpay/amphtml,ampproject/amphtml,nexxtv/amphtml,adup-tech/amphtml,prateekbh/amphtml,jmadler/amphtml,rsimha-amp/amphtml,adup-tech/amphtml,media-net/amphtml,danielrozenberg/amphtml,danielrozenberg/amphtml,aghassemi/amphtml,Gregable/amphtml,media-net/amphtml,pedjoni8/amphtml,prateekbh/amphtml,media-net/amphtml,BenDz/amphtml,alanorozco/amphtml,taboola/amphtml,danielrozenberg/amphtml,cory-work/amphtml,nexxtv/amphtml,erwinmombay/amphtml,smartadserver/amphtml,jridgewell/amphtml,smartadserver/amphtml,laterpay/amphtml,cvializ/amphtml,cvializ/amphtml,cory-work/amphtml,rsimha-amp/amphtml,honeybadgerdontcare/amphtml,chaveznvg/amphtml,adup-tech/amphtml,BenDz/amphtml,tlong2/amphtml,jridgewell/amphtml,mhc-gh/amphtml,zhangsu/amphtml,techhtml/amphtml,koshka/amphtml,pedjoni8/amphtml,widespace-os/amphtml,danielrozenberg/amphtml,jpettitt/amphtml,aghassemi/amphtml,yandex-pcode/amphtml,zhouyx/amphtml,yieldbot/amphtml,pedjoni8/amphtml,dotandads/amphtml,yieldbot/amphtml,voyagegroup/amphtml,pedjoni8/amphtml,sharethrough/amphtml,zhangsu/amphtml,nexxtv/amphtml,jridgewell/amphtml,src-code/amphtml,taboola/amphtml,BenDz/amphtml,prateekbh/amphtml,nexxtv/amphtml,techhtml/amphtml,jpettitt/amphtml,jpettitt/amphtml,Gregable/amphtml,kamtschatka/amphtml,yandex-pcode/amphtml,laterpay/amphtml,alanorozco/amphtml,lannka/amphtml,lannka/amphtml,sebastianbenz/amphtml,Gregable/amphtml,erwinmombay/amphtml,mhc-gh/amphtml,cvializ/amphtml,aghassemi/amphtml,sebastianbenz/amphtml,techhtml/amphtml,zhangsu/amphtml,pedjoni8/amphtml,voyagegroup/amphtml,chaveznvg/amphtml,zhouyx/amphtml,koshka/amphtml,danielrozenberg/amphtml,sharethrough/amphtml,erwinmombay/amphtml,media-net/amphtml,cvializ/amphtml,aghassemi/amphtml,src-code/amphtml,zhouyx/amphtml,koshka/amphtml,tlong2/amphtml,nexxtv/amphtml,kamtschatka/amphtml,cory-work/amphtml,sharethrough/amphtml,zhouyx/amphtml,honeybadgerdontcare/amphtml,yieldbot/amphtml,voyagegroup/amphtml,techhtml/amphtml,tlong2/amphtml,nexxtv/amphtml,koshka/amphtml,mhc-gh/amphtml,chaveznvg/amphtml,mhc-gh/amphtml,smartadserver/amphtml,zhouyx/amphtml,danielrozenberg/amphtml,zhouyx/amphtml,honeybadgerdontcare/amphtml,yandex-pcode/amphtml,jridgewell/amphtml,jmadler/amphtml,dotandads/amphtml,src-code/amphtml,jridgewell/amphtml,erwinmombay/amphtml