pkg-config: update src uri
pkg-config: update src uri

The official pkg-config mirror has moved to https://, and emits an HTTP
301 when connecting to http://, which urlgrabber fails to follow.

Fix this by using https:// explicitly in the SRC_URI

oe-lite/base,oe-lite/base,oe-lite/base,oe-lite/base,moths/base,esben/base,moths/base,oe-lite/base,esben/base,esben/base,moths/base,esben/base,moths/base,oe-lite/base,moths/base,esben/base,esben/base,moths/base