ci: replace unmaintained goto-bus-stop/setup-zig with mlugg/setup-zig action (#128)

* Initial plan

* Replace goto-bus-stop/setup-zig with mlugg/setup-zig action

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

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: Brooooooklyn <[email protected]>

Author: Copilot

.github/workflows/CI.yml

@@ -125,7 +125,7 @@ jobs:
             .cargo-cache
             target/
           key: ${{ matrix.settings.target }}-cargo-${{ matrix.settings.host }}
-      - uses: goto-bus-stop/setup-zig@v2
+      - uses: mlugg/setup-zig@v2
         if: ${{ contains(matrix.settings.target, 'musl') }}
         with:
           version: 0.13.0