Add separate daily check for broken links

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

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

@@ -25,20 +25,4 @@ jobs:
       run: python3 -m pip install mkdocs-material
 
     - 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
+      run: python3 -m mkdocs build