Fix action schedule, increase timeout and pin version (#23)

* Fix actions so they run only once on Sunday

* Increase timeout to prevent false positives

Set timeout to 60 seconds, instead of default 20.

* Pin lychee version

It is recommended by the lychee-action authors:
https://github.com/lycheeverse/lychee-action#security-and-updates

.github/workflows/links-fail-fast.yml

@@ -11,8 +11,9 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: Link Checker
-        uses: lycheeverse/lychee-action@v1
+        uses: lycheeverse/lychee-action@v1.5.1
         with:
+          args: --verbose --no-progress './**/*.md' './**/*.html' --timeout 60
           fail: true
         env:
           GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}

.github/workflows/links.yml

@@ -4,7 +4,7 @@ on:
   repository_dispatch:
   workflow_dispatch:
   schedule:
-    - cron: "* * * * 0" # run every Sunday
+    - cron: "00 1 * * 0" # run at 01:00 on Sundays
 
 jobs:
   linkChecker:
@@ -14,7 +14,9 @@ jobs:
 
       - name: Link Checker
         id: lychee
-        uses: lycheeverse/lychee-action@v1
+        uses: lycheeverse/lychee-action@v1.5.1
+        with:
+          args: --verbose --no-progress './**/*.md' './**/*.html' --timeout 60
         env:
           GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}