Update link-check.yml

Author: rly

.github/workflows/link-check.yml

@@ -15,11 +15,9 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Update CA certificates
-        run: sudo update-ca-certificates
-
       - name: Link Checker
         id: lychee
         uses: lycheeverse/lychee-action@v2
         with:
-          args: --verbose --no-progress './content/**/*.md' './content/**/*.html' './content/**/*.rst'
+          # NOTE: Lychee (and sphinx) encounter issues with SSL certificates for INCF URLs, so use --insecure
+          args: --verbose --no-progress './content/**/*.md' './content/**/*.html' './content/**/*.rst' --insecure