generate docs with py3.11 to match doc team's build (#34035)

* generate docs with py3.11 to match doc team's build

* prep environment

* try 3.11 upstream step

Author: kristapratico

eng/pipelines/generate-all-docs.yml

@@ -1,7 +1,7 @@
 trigger: none
 
 variables:
-  PythonVersion: '3.6'
+  PythonVersion: '3.11'
 
 jobs:
   - job: 'Generate_Individual_Package_Documentation'

eng/pipelines/templates/stages/python-analyze-weekly.yml

@@ -87,6 +87,16 @@ stages:
             env:
               GH_TOKEN: $(azuresdk-github-pat)
 
+          - task: UsePythonVersion@0
+            displayName: 'Use Python 3.11 for docs generation'
+            inputs:
+              versionSpec: '3.11'
+
+          - script: |
+              python -m pip install setuptools==58.3.0
+              python -m pip install -r eng/ci_tools.txt
+            displayName: 'Prep Environment'
+
           - task: PythonScript@0
             displayName: 'Generate Docs'
             continueOnError: true

eng/pipelines/templates/steps/build-extended-artifacts.yml

@@ -43,9 +43,9 @@ steps:
     condition: and(eq(variables['Build.SourceBranchName'], variables['DefaultBranch']), eq(variables['Build.Reason'],'Schedule'))
 
   - task: UsePythonVersion@0
-    displayName: 'Use Python $(PythonVersion)'
+    displayName: 'Use Python 3.11'
     inputs:
-      versionSpec: $(PythonVersion)
+      versionSpec: '3.11'
 
   - script: |
       python -m pip install setuptools==58.3.0