Log Message:
regal: Update to 0.25.0

Changes:
0.25.0
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This release brings 2 new rules to the Regal linter as well as a number
of improvements to the Regal Language Server.

Rules
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- New rule unused-output-variable
- New rule use-strings-count
- Other Rule Updates

Linter
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- JUnit XML output format is now a supported by regal lint
- Regal's version of OPA has been updated to v0.67.0
- The --var-values flag from opa test (added to OPA in v0.66.0) is now
  supported by the regal test command. This allows custom policy authors
  to see the the variable values in scope of a failed test.

Regal Language Server
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- Code Lens Support
- Improved formatter