Bump @actions/cache to 5.1.0, handle cache write denied

[jasongin]

Description:

• Bump @actions/cache to v5.1.0 to pick up actions/toolkit#2435 Handle cache write error due to read-only token
• Fix cache save error handling in cache.ts
• Update generated JavaScript files under dist
• Update license file for dependencies
• Bump minor version in package.json from 5.2.0 to 5.3.0

Check list:

• Mark if documentation changes are required.
• Mark if tests were added or updated to cover the changes.

[Copilot]

Pull request overview

This pull request updates setup-java’s dependency caching behavior by bumping @actions/cache to v5.1.0 and adjusting the action’s post-step cache save logic so it no longer reports a successful save when the cache library returns -1 (e.g., write denied with read-only tokens or reserve collisions).

Changes:

• Bump @actions/cache to ^5.1.0 and update the action version to 5.3.0 (including lockfile).
• Update src/cache.ts to treat saveCache() returning -1 as “not saved” (debug-log + early return) rather than logging a successful save.
• Regenerate dist artifacts, update the Licensed dependency record, and adjust tests to cover the -1 return path.

Show a summary per file

File	Description
src/cache.ts	Avoids logging “Cache saved…” when @actions/cache.saveCache() returns -1 (not saved).
package.json	Bumps action version to 5.3.0 and updates @actions/cache dependency to ^5.1.0.
package-lock.json	Updates lockfile to reflect @actions/cache@5.1.0 and version 5.3.0.
dist/setup/index.js	Updates bundled output to include new cache write-denied handling and regenerated artifacts.
dist/cleanup/index.js	Updates bundled output to match regenerated cache handling behavior.
.licenses/npm/@actions/cache.dep.yml	Updates Licensed metadata for @actions/cache to 5.1.0.
tests/cache.test.ts	Updates/extends coverage for the saveCache() => -1 “not saved” behavior (debug log, no “saved” info log).

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• Files reviewed: 4/7 changed files
• Comments generated: 0