Update checkout action to v4

checkout@v2 is deprecated

.github/workflows/build-image.yaml

@@ -13,7 +13,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Build image
         run: |
           docker run --privileged --rm -v /dev:/dev -v $(pwd):/builder/repo -e TRAVIS_TAG="${{ github.event.release.tag_name }}" sfalexrog/img-tool:qemu-update

.github/workflows/build.yml

@@ -11,7 +11,7 @@ jobs:
   # melodic:
   #   runs-on: ubuntu-latest
   #   steps:
-  #     - uses: actions/checkout@v2
+  #     - uses: actions/checkout@v4
   #     - name: Native Melodic build
   #       run: |
   #         docker run --rm -v $(pwd):/root/catkin_ws/src/clover ros:melodic-ros-base /root/catkin_ws/src/clover/builder/standalone-install.sh
@@ -23,7 +23,7 @@ jobs:
         working-directory: catkin_ws
         shell: bash
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
       with:
         path: catkin_ws/src/clover
     - name: Install requirements

.github/workflows/docs.yml

@@ -20,7 +20,7 @@ jobs:
   docs:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Use Node.js
         uses: actions/setup-node@v1
         with: { node-version: '10' }

.github/workflows/editorconfig.yaml

@@ -11,7 +11,7 @@ jobs:
   editorconfig:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: .editorconfig Linter
         run: |
           wget --no-verbose https://github.com/okalachev/editorconfig-checker/releases/download/1.2.1-disable-spaces-amount/ec-linux-amd64