Bump actions/checkout from 3 to 4

.github/workflows/gettext.yml

@@ -6,7 +6,7 @@ jobs:
   gettext_template:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: elementary/actions/gettext-template@master
       env:
         GIT_USER_TOKEN: "${{ secrets.GIT_USER_TOKEN }}"

.github/workflows/main.yml

@@ -20,7 +20,7 @@ jobs:
       image: ghcr.io/elementary/docker:${{ matrix.version }}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install Dependencies
       run: |
         apt update
@@ -42,6 +42,6 @@ jobs:
       image: valalang/lint
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Lint
       run: io.elementary.vala-lint -d .

.github/workflows/release.yml

@@ -9,7 +9,7 @@ jobs:
      runs-on: ubuntu-latest
      if: github.event.pull_request.merged == true && true == contains(join(github.event.pull_request.labels.*.name), 'Release')
      steps:
-     - uses: actions/checkout@v3
+     - uses: actions/checkout@v4
      - uses: elementary/actions/release@master
        env:
          GIT_USER_TOKEN: "${{ secrets.GIT_USER_TOKEN }}"