chore(deps): pin dependencies

Author: renovate[bot]

.github/workflows/renovate-config-check.yaml

@@ -12,7 +12,7 @@ jobs:
   validate:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
       - name: Validate renovate.json
         run: npx --yes --package renovate -- renovate-config-validator

.github/workflows/test-and-release.yaml

@@ -15,9 +15,9 @@ jobs:
     runs-on: ubuntu-24.04
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
-      - uses: actions/setup-node@v6
+      - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6
         with:
           node-version: "24.x"
           cache: "npm"