chore(deps): update dependency dev.sigstore:sigstore-maven-plugin to v2.3.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
dev.sigstore:sigstore-maven-plugin	2.2.0 → 2.3.0

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Release Notes

sigstore/sigstore-java (dev.sigstore:sigstore-maven-plugin)

v2.3.0

Compare Source

Added

• Allow verifying bundles without transparency-log entries (for private deployments), relying on signed RFC 3161 timestamps: #​1252
• Add Automatic-Module-Name to sigstore-java: #​1269
• Support Gradle Project Isolation in the Gradle plugin: #​1246

Fixed

• Handle 409 responses from Rekor: #​1266

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.57%. Comparing base (0cf6fdf) to head (4b68e31).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #886      +/-   ##
============================================
+ Coverage     87.16%   87.57%   +0.41%     
  Complexity     1281     1281              
============================================
  Files            51       51              
  Lines          4113     4113              
  Branches        565      565              
============================================
+ Hits           3585     3602      +17     
+ Misses          310      293      -17     
  Partials        218      218              

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