Add separate daily check for broken links

Signed-off-by: David Young <davidy@funkypenguin.co.nz>

.github/workflows/check-for-broken-links.yml

@@ -0,0 +1,28 @@
+name: Check for broken links
+
+on:
+  repository_dispatch:
+  workflow_dispatch:
+  schedule:
+    - cron: "00 18 * * *"
+
+jobs:
+  linkChecker:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Link Checker
+        id: lychee
+        uses: lycheeverse/lychee-action@v1.5.1
+        env:
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
+
+      - name: Create Issue From File
+        if: steps.lychee.outputs.exit_code != 0
+        uses: peter-evans/create-issue-from-file@v4
+        with:
+          title: Link Checker Report
+          content-filepath: ./lychee/out.md
+          labels: report, automated issue
+

.github/workflows/mkdocs-build-sanity-check.yml

@@ -26,19 +26,3 @@ jobs:
 
     - name: Test mkdocs builds
       run: python3 -m mkdocs build
-
-    - name: Link Checker
-      id: lychee
-      uses: lycheeverse/lychee-action@v1
-      with:
-        args: --verbose --no-progress site/**/*.html      
-      env:
-        GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
-        
-    - name: Create Issue From File
-      if: steps.lychee.outputs.exit_code != 0
-      uses: peter-evans/create-issue-from-file@v4
-      with:
-        title: Link Checker Report
-        content-filepath: ./lychee/out.md
-        labels: report, automated issue