Update to Grafana 10.2.1

[mikhail-vl]

1. Update to Plugin Tools 2.1.1
2. Use Grafana Access Policy to sign plugin
3. Update to Grafana 10.2.1

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (4378556) 97.53% compared to head (fbcb679) 97.54%.

❗ Current head fbcb679 differs from pull request most recent head 6ceb63c. Consider uploading reports for the commit 6ceb63c to get more accurate results

Files	Patch %	Lines
src/components/FormPanel/FormPanel.tsx	88.88%	2 Missing ⚠️
src/components/FormElement/FormElement.tsx	92.85%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #292      +/-   ##
==========================================
+ Coverage   97.53%   97.54%   +0.01%     
==========================================
  Files          59       62       +3     
  Lines         972     1018      +46     
  Branches      172      181       +9     
==========================================
+ Hits          948      993      +45     
- Misses         13       14       +1     
  Partials       11       11              

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[mikhail-vl]

Looks great!