Update workflows, use newer version of Python

.github/workflows/format.yml

@@ -7,10 +7,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
 
     - name: Set up Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: '3.8'
 

.github/workflows/pypi.yml

@@ -9,10 +9,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v3
 
     - name: Set up Python
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v4
 
     - name: Install dependencies
       run: |

.github/workflows/test.yml

@@ -11,12 +11,12 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v3
 
     - name: Set up Python
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v4
       with:
-        python-version: 3.6
+        python-version: '3.8'
 
     - name: Install dependencies
       run: pip install .[dev]

.github/workflows/verify.yml

@@ -7,10 +7,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v3
 
     - name: Set up Python
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v4
 
     - name: Install dependencies
       run: pip3 install -U git+https://github.com/online-judge-tools/verification-helper.git@master
@@ -22,24 +22,24 @@ jobs:
 
     # required only if you want to verify Java code
     - name: Install dependencies (Java)
-      uses: actions/setup-java@v1
+      uses: actions/setup-java@v3
       with:
         java-version: 11
 
     # required only if you want to verify C# script files
-    - uses: actions/setup-dotnet@v1
+    - uses: actions/setup-dotnet@v3
       with:
         dotnet-version: '3.1.101'
     - name: Install dependencies (C#)
-      run: dotnet tool install -g dotnet-script
+      run: dotnet tool install --global dotnet-script --version 1.4.0
 
     # required only if you want to verify Go code
     - name: Install dependencies (Go)
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v4
 
     # required only if you want to verify Ruby code
     - name: Install dependencies (Ruby)
-      uses: actions/setup-ruby@v1
+      uses: ruby/setup-ruby@v1
 
     # required only if you want to verify Nim code
     - name: Install dependencies (Nim)