Bump mlugg/setup-zig from 1 to 2

Bumps [mlugg/setup-zig](https://github.com/mlugg/setup-zig) from 1 to 2.
- [Release notes](https://github.com/mlugg/setup-zig/releases)
- [Commits](mlugg/setup-zig@v1...v2)

---
updated-dependencies:
- dependency-name: mlugg/setup-zig
  dependency-version: '2'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/CI.yml

@@ -15,7 +15,7 @@ jobs:
           submodules: recursive
           fetch-depth: 0
 
-      - uses: mlugg/setup-zig@v1
+      - uses: mlugg/setup-zig@v2
         with:
           version: master