github actions: update checkout actions to v4 (#870)

.github/workflows/build.yml

@@ -29,7 +29,7 @@ jobs:
       url: https://github.com/awesome-selfhosted/awesome-selfhosted
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           ref: ${{ github.ref }}
       - run: make install
@@ -48,7 +48,7 @@ jobs:
       url: https://github.com/awesome-selfhosted/awesome-selfhosted-html
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           ref: ${{ github.ref }}
       - run: make install

.github/workflows/check-dead-links.yml

@@ -17,6 +17,6 @@ jobs:
     if: github.repository == 'awesome-selfhosted/awesome-selfhosted-data'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: make install
       - run: make url_check

.github/workflows/check-unmaintained-projects.yml

@@ -17,6 +17,6 @@ jobs:
     if: github.repository == 'awesome-selfhosted/awesome-selfhosted-data'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: make install
       - run: make awesome_lint_strict

.github/workflows/daily-update-metadata.yml

@@ -17,7 +17,7 @@ jobs:
     if: github.repository == 'awesome-selfhosted/awesome-selfhosted-data'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: make install
       - run: make update_metadata
       - name: commit and push changes

.github/workflows/pull-request.yml

@@ -12,7 +12,7 @@ jobs:
   syntax-checks:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: make install
       - run: make awesome_lint
       - run: make export_markdown