Bump actions/checkout from 2 to 3

.github/workflows/build-docker.yml

@@ -73,7 +73,7 @@ jobs:
             docker-build-master-
 
       - name: checkout ${{ matrix.branch }}
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           ref: ${{ matrix.branch }}
 

.github/workflows/code_layout.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Set up Python 3.7
         uses: actions/[email protected]
         with:
@@ -53,7 +53,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install Requirements
         run: |
           sudo apt install -y \
@@ -67,7 +67,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install Requirements
         run: |
             sudo apt install -y \
@@ -80,39 +80,39 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Run Banned Keywords Test
         run: ./tests/code_layout/test_banned_keywords.sh
 
   def_window_title_check:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Def Window Title Test
         run: ./tests/code_layout/test_defwindowtitle.sh
 
   qvariant_no_brace_init:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: No brace initialization of QVariant variables
         run: ./tests/code_layout/test_qvariant_no_brace_init.sh
 
   qt_module_wide_imports:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: No module-wide imports of Qt modules
         run: ./tests/code_layout/test_qt_imports.sh
 
   doxygen_layout_check:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install Requirements
         run: |
           sudo apt install -y \
@@ -126,7 +126,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           fetch-depth: 100
       - name: Install Requirements
@@ -142,7 +142,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install Requirements
         run: |
           sudo apt install -y \
@@ -184,7 +184,7 @@ jobs:
           python -m pip install --upgrade pip
           pip install autopep8 nose2 mock termcolor
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Sip Checks
         run: ./tests/code_layout/test_sipify.sh
       - name: Sip Include Test
@@ -196,7 +196,7 @@ jobs:
     runs-on: ubuntu-18.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Install Requirements
         run: |

.github/workflows/flake8.yml

@@ -19,7 +19,7 @@ jobs:
           python-version: 3.7
           architecture: x64
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Run flake8
         uses: julianwachholz/[email protected]
         with:

.github/workflows/macos-build.yml

@@ -27,7 +27,7 @@ jobs:
     if: github.repository == 'qgis/QGIS'
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Prepare build cache for pull request
         uses: pat-s/[email protected]

.github/workflows/mingw64.yml

@@ -28,7 +28,7 @@ jobs:
         - ${{ github.workspace }}:/w
     steps:
 
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Update system
         run: dnf -y update

.github/workflows/ogc.yml

@@ -34,7 +34,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@master
+        uses: actions/checkout@v3
 
       - name: Prepare build cache for pull request
         uses: pat-s/[email protected]

.github/workflows/run-tests.yml

@@ -80,7 +80,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Set vars
         env:
@@ -315,7 +315,7 @@ jobs:
           sudo df -h
 
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Set vars
         env: