ci(github-action)!: Update actions/setup-go action ( v5 → v6 )

| datasource  | package          | from | to |
| ----------- | ---------------- | ---- | -- |
| github-tags | actions/setup-go | v5   | v6 |

Author: renovate[bot]

.github/workflows/on-tag.yaml

@@ -43,7 +43,7 @@ jobs:
           fetch-depth: 0
       - run: git fetch --force --tags
       - name: Setup Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version: 1.24.6
         id: go

.github/workflows/tests.yaml

@@ -36,7 +36,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v6
         with:
           go-version: ">=1.21.4"
       - name: Check Go Fmt
@@ -59,7 +59,7 @@ jobs:
       pull-requests: read
       checks: write
     steps:
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v6
         if: steps.changes.outputs.go-files == 'true'
         with:
           go-version: ">=1.21.4"
@@ -84,7 +84,7 @@ jobs:
               - 'go.mod'
               - 'go.sum'
       - name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version: ">=1.21.4"
       - name: Tidy