build: upgrade javacc-maven-plugin from 2.4 to 3.2.0

[NiccoMlt]

Upgrades the generator behind the request-matcher DSL to recent JavaCC version.

Closes #561

Note

JavaCC 8 exists, shipped under new coordinates (org.javacc:core, org.javacc.generator:java 8.1.0) and driven by its own rewritten plugin (org.javacc.plugin:javacc-maven-plugin 3.8.0).

Though, both were published only a few months ago, and as far as I can tell it ships with a different configuration model.

This PR stays on the 7.x line and leaves the v8 migration to a dedicated issue.

What changed

javacc-maven-plugin was stuck on a version from Maven 2-era.

One commit per plugin generation, so each transition is bisectable:

Plugin	JavaCC	Notable change
2.4 → 2.6	4.0 → 5.0	generator only
2.6 → 3.0.1	5.0 → 7.0.12	Maven 3 rewrite: annotation mojos, javacc. property prefix, grammar options {} no longer overridden
3.0.1 → 3.2.0	7.0.12 → 7.0.13	thread-safe mojos, Doxia 2.0, grammars read with configured encoding
—	7.0.13 pinned	generator version was invisible in the POM; now a plugin dependency

Grammar was unchanged, as 7.0.13 accepts it as-is.

Generated code stays under target/. Deltas on generated code are cosmetic.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 0d4f20f and edfa51f.

📒 Files selected for processing (1)

• pom.xml

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📝 Walkthrough

Walkthrough

The parent Maven configuration upgrades javacc-maven-plugin from 2.4 to 3.2.0, updates the JavaCC library version to 7.0.13, and explicitly adds the JavaCC artifact as a plugin dependency.

Assessment against linked issues

Objective	Addressed	Explanation
Upgrade the JavaCC Maven plugin to the requested version [#561]	❌	The POM uses 3.2.0 instead of the requested 3.1.1.
Audit grammars and verify build/tests after the upgrade [#561]	❓	No grammar changes or build/test verification are shown in the provided changes.

Suggested reviewers: diennea-bot

Poem

A rabbit hopped through Maven’s gate,
And found JavaCC made up-to-date.
New versions sprang from every line,
Dependencies aligned just fine.
“Build onward!” cheered the bunny bright.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch 561-upgrade-javacc-maven-plugin-to-311

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