update latest Python in CI to 3.10 / use all available threads for pylint (#3493)

.github/workflows/CI-unixish.yml

@@ -17,10 +17,10 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: Set up Python 3.9
+      - name: Set up Python 3.10
         uses: actions/setup-python@v2
         with:
-          python-version: 3.9
+          python-version: '3.10'
 
       - name: Cache uncrustify
         uses: actions/cache@v2

.github/workflows/CI-windows.yml

@@ -25,11 +25,11 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: Set up Python 3.9
+      - name: Set up Python 3.10
         if: matrix.qt_ver == ''
         uses: actions/setup-python@v2
         with:
-          python-version: 3.9
+          python-version: '3.10'
 
       - name: Setup msbuild.exe
         if: matrix.qt_ver == ''

.github/workflows/scriptcheck.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        python-version: [2.7, 3.5, 3.6, 3.7, 3.8, 3.9]
+        python-version: [2.7, 3.5, 3.6, 3.7, 3.8, 3.9, '3.10']
       fail-fast: false
 
     steps:
@@ -48,25 +48,22 @@ jobs:
           python -m pip install psutil
 
       - name: run Shellcheck
-        if: matrix.python-version == '3.9'
+        if: matrix.python-version == '3.10'
         run: |
           find . -name "*.sh" | xargs shellcheck --exclude SC2002,SC2013,SC2034,SC2035,SC2043,SC2046,SC2086,SC2089,SC2090,SC2129,SC2211,SC2231
 
       - name: run pylint
-        if: matrix.python-version == '3.9'
+        if: matrix.python-version == '3.10'
         run: |
-          pylint --rcfile=pylintrc_travis addons/*.py
+          pylint --rcfile=pylintrc_travis --jobs $(nproc) addons/*.py htmlreport/cppcheck-htmlreport htmlreport/*.py tools/*.py
-          pylint --rcfile=pylintrc_travis htmlreport/cppcheck-htmlreport
-          pylint --rcfile=pylintrc_travis htmlreport/*.py
-          pylint --rcfile=pylintrc_travis tools/*.py
 
       - name: check .json files
-        if: matrix.python-version == '3.9'
+        if: matrix.python-version == '3.10'
         run: |
           find . -name '*.json' | xargs -n 1 python -m json.tool > /dev/null
 
       - name: Validate
-        if: matrix.python-version == '3.9'
+        if: matrix.python-version == '3.10'
         run: |
           make -j$(nproc) validateCFG validatePlatforms validateRules
 
@@ -103,7 +100,7 @@ jobs:
           ./check.sh
 
       - name: dmake
-        if: matrix.python-version == '3.9'
+        if: matrix.python-version == '3.10'
         run: |
           make -j$(nproc) run-dmake
           git diff --exit-code