ci(workflows): assign explicit permissions (#207)

* ci(workflows): assign explicit permissions

* ci(idle-issues): remove permissions

We will remove this workflow.

Author: caugner

.github/workflows/lock-closed.yml

@@ -3,6 +3,10 @@ on:
   schedule:
     - cron: "0 9 1 * *"
 
+permissions:
+  issues: write
+  pull-requests: write
+
 jobs:
   lock:
     uses: mdn/workflows/.github/workflows/lock-closed.yml@main

.github/workflows/new-issues.yml

@@ -6,6 +6,10 @@ on:
       - reopened
       - opened
 
+permissions:
+  issues: write
+  pull-requests: write
+
 jobs:
   label-new-issues:
     runs-on: ubuntu-latest

.github/workflows/pr-merge-conflicts.yml

@@ -5,6 +5,10 @@ on:
   pull_request_target:
     types: [synchronize]
 
+permissions:
+  # Label pull requests.
+  pull-requests: write
+
 jobs:
   label-merge-conflicts:
     uses: mdn/workflows/.github/workflows/pr-rebase-needed.yml@main