chore(ci): Skip Spring Boot tests when updating Android modules (#5453)

* chore(ci): Skip Spring Boot matrix jobs on Android-only pull requests (JAVA-510)

Prior to this commit, Android-only PRs were silently triggering 14 unrelated Spring Boot matrix jobs (up to 45 min each). This commit fixes that by adding missing PR filters for all Android directories, letting us skip Spring Boot CI entirely when nothing Spring-related changes.

Note: Every push to main still runs the full matrix.

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Co-authored-by: Cursor <cursoragent@cursor.com>