chore(deps): update actions/setup-go action to v6

.github/workflows/release.yml

@@ -23,7 +23,7 @@ jobs:
       - uses: actions/checkout@v5
         with:
           fetch-depth: 0 # this is important, otherwise it won't checkout the full tree (i.e. no previous tags)
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v6
         with:
           go-version: 1.25
           cache: true

.github/workflows/test.yml

@@ -13,7 +13,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version: '1.25'