chore: update main.yml with correct ubuntu and python versions

Author: Abhi591

.github/workflows/main.yaml

@@ -15,13 +15,13 @@ jobs:
       fail-fast: false
       matrix:
         os:
-          - ubuntu-20.04
-        python-version: [ 3.6.7, 3.6.10, 3.6.14, 3.7.5, 3.7.11, 3.8.0, 3.8.5, 3.9.0, 3.9.6, 3.9.18, 3.10.13, 3.11.6]
+          - ubuntu-22.04
+        python-version: [ 3.7, 3.8, 3.9, 3.10.x, 3.11, 3.12 ]
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Use Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
         cache: 'pip'