Bump checkstyle from 8.44 to 9.0 (apache#180)

Bumps [checkstyle](https://github.com/checkstyle/checkstyle) from 8.44 to 9.0.
- [Release notes](https://github.com/checkstyle/checkstyle/releases)
- [Commits](checkstyle/checkstyle@checkstyle-8.44...checkstyle-9.0)

---
updated-dependencies:
- dependency-name: com.puppycrawl.tools:checkstyle
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pom.xml

@@ -165,7 +165,7 @@
     <commons.encoding>UTF-8</commons.encoding>
 
     <commons.checkstyle-plugin.version>3.1.2</commons.checkstyle-plugin.version>
-    <commons.checkstyle.version>8.44</commons.checkstyle.version>
+    <commons.checkstyle.version>9.0</commons.checkstyle.version>
     <checkstyle.header.file>${basedir}/src/site/resources/checkstyle/checkstyle-header.txt</checkstyle.header.file>
     <checkstyle.config.file>${basedir}/src/site/resources/checkstyle/checkstyle.xml</checkstyle.config.file>
     <checkstyle.suppress.file>${basedir}/src/site/resources/checkstyle/checkstyle-suppressions.xml</checkstyle.suppress.file>