Prepare 3.1.0 release

[JillieBeanSim]

Proposed changes

Prepare 3.1.0 release

Release Notes

Milestone: 3.1.0

Changelog: n/a

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• Enhancement (non-breaking change which adds or improves functionality)
• Breaking change (a change that would cause existing functionality to not work as expected)
• Documentation (Markdown, README updates)
• Other (please specify above in "Proposed changes" section)

Checklist

General

• I have read the CONTRIBUTOR GUIDANCE wiki
• All PR dependencies have been merged and published (if applicable)
• A GIF or screenshot is included in the PR for visual changes
• The pre-publish command has been executed:
  • v2 and below: yarn workspace vscode-extension-for-zowe vscode:prepublish
  • v3: pnpm --filter vscode-extension-for-zowe vscode:prepublish

Code coverage

• There is coverage for the code that I have added
• I have added new test cases and they are passing
• I have manually tested the changes

Deployment

• I have added developer documentation (if applicable)
• Documentation should be added to Zowe Docs
  • If you're an outside contributor, please post in the #zowe-doc Slack channel to coordinate documentation.
  • Otherwise, please check with the rest of the squad about any needed documentation before merging.
• These changes may need ported to the appropriate branches (list here):

Further comments

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.18%. Comparing base (d5ad25f) to head (fcdd0cb).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3398   +/-   ##
=======================================
  Coverage   93.18%   93.18%           
=======================================
  Files         120      120           
  Lines       12490    12490           
  Branches     2880     2867   -13     
=======================================
  Hits        11639    11639           
  Misses        850      850           
  Partials        1        1           

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