Update actions/setup-go action to v6.4.0 (#36)

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

Author: renovate[bot]

.github/workflows/actions.yml

@@ -20,7 +20,7 @@ jobs:
         uses: actions/checkout@v6.0.2
 
       - name: Set up Go
-        uses: actions/setup-go@v6.2.0
+        uses: actions/setup-go@v6.4.0
         with:
           go-version: '1.25.7'
 
@@ -48,7 +48,7 @@ jobs:
           fetch-depth: 0
 
       - name: Set up Go
-        uses: actions/setup-go@v6.2.0
+        uses: actions/setup-go@v6.4.0
         with:
           go-version: '1.25.7'