fix: update supported ANSYS version to 2027R1

[germa89]

Description

Update latest ANSYS MAPDL supported version.

Issue linked

Close #4428

Checklist

• I have visited and read Develop PyMAPDL.
• I have tested my changes locally
• I have added necessary documentation or updated existing documentation.
• I have followed the PyMAPDL coding style guidelines.
• I have added appropriate unit tests that also ensure the minimal coverage criteria.
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved to the PR if any.
• I have assigned this PR to myself.
• I have marked this PR as draft if it is not ready to be reviewed yet.
• I have made sure that the title of my PR follows Commit naming conventions (e.g. feat: adding new MAPDL command)

[germa89]

@pyansys-ci-bot LGTM.

[pyansys-ci-bot]

✅ Approving this PR because germa89 said so in here 😬

[Copilot]

Pull request overview

Updates PyMAPDL’s internal mapping of supported Ansys MAPDL versions so the latest supported release reflects the current MAPDL version numbering (per #4428).

Changes:

• Replace the (now invalid) latest supported MAPDL version key 262 / "2026R2" with 271 / "2027R1" in the supported-version map.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.99%. Comparing base (fc979b9) to head (52f2bba).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4431      +/-   ##
==========================================
- Coverage   91.08%   90.99%   -0.09%     
==========================================
  Files         196      196              
  Lines       16209    16209              
==========================================
- Hits        14764    14750      -14     
- Misses       1445     1459      +14     

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