fix: use exact hash

Author: vil02

.github/workflows/all_url_check.yml

@@ -20,7 +20,7 @@ jobs:
 
       - name: link_check with lychee-action
         id: link_check
-        uses: lycheeverse/[email protected]
+        uses: lycheeverse/lychee-action@5c4ee84814c983aa7164eaee476f014e53ff3963  # v2.5.0
         with:
           args: >
             --verbose