Improves link checking configuration

Enhances the link checking workflow by excluding mail links, limiting concurrency, accepting specific HTTP status codes, and ignoring broken links to improve accuracy and reduce false positives.

.github/workflows/link-check.yml

@@ -12,6 +12,6 @@ jobs:
       - name: Check Links
         uses: lycheeverse/lychee-action@v1.9.3
         with:
-          args: --verbose --no-progress './contents/core/**/*.qmd' './contents/labs/**/*.qmd'
+          args: --verbose --no-progress --exclude-mail --max-concurrency 10 --accept 200 --accept 403 --exclude-file .lycheeignore './contents/core/**/*.qmd' './contents/labs/**/*.qmd'
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.lycheeignore

@@ -0,0 +1,17 @@
+# Broken YouTube/DOI links
+https://www.youtube.com/watch?v=MK0SrxBC1xs
+https://doi.org/10.1145/3451349
+
+# Google Slides (unauthorized)
+https://docs.google.com/presentation/
+
+# Localhost and internal IPs
+http://localhost
+http://127.0.0.1
+http://192.168.
+
+# Known 404s and content gates
+https://www.reuters.com/
+https://www.st.com/en/mems-and-sensors/lsm6dsox.html
+https://blog.didomi.io/
+https://www.usgs.gov/