Use the rust-lang/gcc repo directly

Co-authored-by: Urgau <[email protected]>

Author: cuviper

src/ci/docker/host-x86_64/dist-x86_64-linux/build-gccjit.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-GIT_REPO="https://github.com/antoyo/gcc"
+GIT_REPO="https://github.com/rust-lang/gcc"
 
 # This commit hash needs to be updated to use a more recent gcc fork version.
 GIT_COMMIT="78dc50f0e50e6cd1433149520bd512a4e0eaa1bc"