Update: [Actions] Bump used actions versions (#407)

actions/checkout from v2 to v3
actions/setup-python from v1 to v4
TrueBrain/actions-flake8 from v1 to v2
OpenTTD/actions/annotation-check from v2 to v3

.github/workflows/commit-checker.yml

@@ -10,7 +10,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         fetch-depth: 4
 

.github/workflows/new_comment.yml

@@ -13,11 +13,12 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: Set up Python 3.8
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v4
       with:
         python-version: 3.8
+        cache: 'pip'
     - name: Install dependencies
       run: |
         pip install -U pip

.github/workflows/new_issue.yml

@@ -13,11 +13,12 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: Set up Python 3.8
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v4
       with:
         python-version: 3.8
+        cache: 'pip'
     - name: Install dependencies
       run: |
         pip install -U pip

.github/workflows/testing.yml

@@ -14,9 +14,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: Flake8
-      uses: TrueBrain/actions-flake8@v1
+      uses: TrueBrain/actions-flake8@v2
       with:
         path: request_access
 
@@ -25,9 +25,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: Set up Python 3.8
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v4
       with:
         python-version: 3.8
     - name: Black
@@ -48,4 +48,4 @@ jobs:
 
     steps:
     - name: Check annotations
-      uses: OpenTTD/actions/annotation-check@v2
+      uses: OpenTTD/actions/annotation-check@v3