Bump mackerelio/workflows/.github/workflows/setup-go-matrix.yml

Bumps [mackerelio/workflows/.github/workflows/setup-go-matrix.yml](https://github.com/mackerelio/workflows) from 1.7.0 to 1.8.0.
- [Release notes](https://github.com/mackerelio/workflows/releases)
- [Commits](mackerelio/workflows@6cab415...5273643)

---
updated-dependencies:
- dependency-name: mackerelio/workflows/.github/workflows/setup-go-matrix.yml
  dependency-version: 1.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/test.yml

@@ -19,15 +19,15 @@ jobs:
       pre: |
         echo "GOTOOLCHAIN=auto" >> $GITHUB_ENV
   test-linux:
-    uses: mackerelio/workflows/.github/workflows/setup-go-matrix.yml@6cab415574bf67882182b34516fd2934b9dc5800 # v1.7.0
+    uses: mackerelio/workflows/.github/workflows/setup-go-matrix.yml@52736435ff08612880b76fd6618ca82ae7bba420 # v1.8.0
     with:
       run: |
         export GOTOOLCHAIN=auto
         ./test.bash
         make testconvention
       os-versions: '["ubuntu-24.04"]'
   test-windows:
-    uses: mackerelio/workflows/.github/workflows/setup-go-matrix.yml@6cab415574bf67882182b34516fd2934b9dc5800 # v1.7.0
+    uses: mackerelio/workflows/.github/workflows/setup-go-matrix.yml@52736435ff08612880b76fd6618ca82ae7bba420 # v1.8.0
     with:
       run: |
         export GOTOOLCHAIN=auto