ci: fix zizmor audit findings (#337)

Author: MarshallOfSound

.github/dependabot.yml

@@ -4,3 +4,5 @@ updates:
     directory: "/"
     schedule:
       interval: "monthly"
+    cooldown:
+      default-days: 7

.github/workflows/release.yml

@@ -5,6 +5,8 @@ on:
     branches:
       - main
 
+permissions: {}
+
 jobs:
   test:
     uses: ./.github/workflows/test.yml

.github/workflows/test.yml

@@ -46,6 +46,8 @@ jobs:
           sudo sysctl -w kernel.apparmor_restrict_unprivileged_userns=0
       - name: Checkout
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
       - name: Setup Node.js
         uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
         with: