chore(deps)!: update actions/setup-go (v5 → v6)

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

.github/workflows/ci.yaml

@@ -15,12 +15,12 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v6
         with:
           go-version-file: "go.mod"
 
       - name: Cache Go build
-        uses: actions/cache@cdf6c1fa76f9f475f3d7449005a359c84ca0f306 # v5
+        uses: actions/cache@v4
         with:
           path: |
             ~/.cache/go-build

.github/workflows/release.yaml

@@ -19,7 +19,7 @@ jobs:
           fetch-depth: 0
 
       - name: Setup Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v6
         with:
           go-version-file: "go.mod"