update actions versions

Author: poshul

.github/workflows/main.yml

@@ -21,14 +21,14 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       - name: Restore lychee (linkcheck) cache 
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: .lycheecache
           key: cache-lychee-${{ github.sha }}
           restore-keys: cache-lychee-
 
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       # Install newer python and pip
       - uses: actions/setup-python@v4
@@ -46,7 +46,7 @@ jobs:
 
       # link check of html
       - name: Run lychee
-        uses: lycheeverse/lychee-action@v1.5.4
+        uses: lycheeverse/lychee-action@v2.3.0
         with:
           fail: true
           args: --cache --max-cache-age 1d './**/*.html' --timeout 40