[update-checkout] Pin swift-crypto to a version
[update-checkout] Pin swift-crypto to a version

[swift-crypto v1.1.4](https://github.com/apple/swift-crypto/releases/tag/1.1.4) has all the changes we need and we can pin to that version instead of `main`.

parkera/swift,atrick/swift,benlangmuir/swift,atrick/swift,ahoppen/swift,apple/swift,gregomni/swift,roambotics/swift,atrick/swift,tkremenek/swift,glessard/swift,JGiola/swift,gregomni/swift,glessard/swift,xwu/swift,rudkx/swift,roambotics/swift,glessard/swift,ahoppen/swift,hooman/swift,JGiola/swift,rudkx/swift,rudkx/swift,rudkx/swift,apple/swift,roambotics/swift,parkera/swift,hooman/swift,tkremenek/swift,xwu/swift,JGiola/swift,glessard/swift,ahoppen/swift,benlangmuir/swift,parkera/swift,xwu/swift,parkera/swift,parkera/swift,apple/swift,gregomni/swift,xwu/swift,atrick/swift,rudkx/swift,tkremenek/swift,benlangmuir/swift,tkremenek/swift,atrick/swift,roambotics/swift,tkremenek/swift,JGiola/swift,roambotics/swift,hooman/swift,ahoppen/swift,tkremenek/swift,apple/swift,xwu/swift,benlangmuir/swift,hooman/swift,parkera/swift,ahoppen/swift,benlangmuir/swift,parkera/swift,hooman/swift,glessard/swift,gregomni/swift,xwu/swift,ahoppen/swift,roambotics/swift,benlangmuir/swift,hooman/swift,gregomni/swift,rudkx/swift,parkera/swift,apple/swift,JGiola/swift,hooman/swift,glessard/swift,gregomni/swift,atrick/swift,tkremenek/swift,xwu/swift,apple/swift,JGiola/swift