updated

.github/allowed-actions.js

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+// This is a whitelist of GitHub Actions that are approved for use in this project.
+// If a new or existing workflow file is updated to use an action or action version
+// not listed here, CI will fail.
+
+module.exports = [
+    'gaurav-nelson/github-action-markdown-link-check@7481451f70251762f149d69596e3e276ebf2b236', // gaurav-nelson/github-action-markdown-link-check@v1.0.8
+]

.github/dependabot.yml

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+version: 2
+updates:
+  - package-ecosystem: "cargo"
+    directory: "/"
+    labels: ["A2-insubstantial", "B0-silent", "C1-low"]
+    schedule:
+      interval: "daily"

.github/workflows/check-labels.yml

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+name: Check labels
+
+on:
+  pull_request:
+    types: [labeled, opened, synchronize, unlabeled]
+
+jobs:
+  check-labels:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Check labels
+        run: bash ${{ github.workspace }}/.maintain/github/check_labels.sh
+        env:
+          GITHUB_PR: ${{ github.event.pull_request.number }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/md-link-check.yml

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+name: Check Links
+
+on:
+  pull_request:
+    branches:
+    - master
+  push:
+    branches:
+    - master
+
+jobs:
+  markdown-link-check:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: gaurav-nelson/github-action-markdown-link-check@7481451f70251762f149d69596e3e276ebf2b236
+      with:
+        use-quiet-mode: 'yes'
+        config-file: '.github/workflows/mlc_config.json'

.github/workflows/mlc_config.json

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+{
+    "ignorePatterns": [
+        {
+            "pattern": "^https://crates.io",
+        }
+    ]
+}