Update CI and doxygen config for 22.04 ubuntu version

Author: AniruddhaKanhere

.github/workflows/ci.yml

@@ -44,7 +44,7 @@ jobs:
         with:
           path: ./
   doxygen:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - name: Run doxygen build
@@ -61,7 +61,7 @@ jobs:
         with:
           path: ./
   formatting:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
       - name: Check formatting
@@ -108,7 +108,7 @@ jobs:
       - name: Install Python3
         uses: actions/setup-python@v2
         with:
-          python-version: '3.7.10'
+          python-version: '3.11.0'
       - name: Measure sizes
         uses: FreeRTOS/CI-CD-Github-Actions/memory_statistics@main
         with: