[llvm] workflows/release-binaries-all: Use self-repository reference for actions (PR #218194)

[Tom Stellard via llvm-commits]

tstellar wrote:

> Nice!
> 
> I'm guessing there's probably quiet a few places where we can use this.

Yeah, I've fixed a few already but there are still more. 

https://github.com/llvm/llvm-project/pull/218194