Update mlugg/setup-zig digest to 8d6198c (#32)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/build.yaml

@@ -36,7 +36,7 @@ jobs:
         with:
           submodules: true
 
-      - uses: mlugg/setup-zig@475c97be87a204e6c57fe851f970bd02005a70f0 # ratchet:mlugg/setup-zig@v2
+      - uses: mlugg/setup-zig@8d6198c65fb0feaa111df26e6b467fea8345e46f # v2
         with:
           version: 0.14.0