Bump checkstyle from 9.0 to 9.0.1

Bumps [checkstyle](https://github.com/checkstyle/checkstyle) from 9.0 to 9.0.1.
- [Release notes](https://github.com/checkstyle/checkstyle/releases)
- [Commits](checkstyle/checkstyle@checkstyle-9.0...checkstyle-9.0.1)

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

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -571,7 +571,7 @@
     <!-- The RC version used in the staging repository URL. -->
     <commons.rc.version>RC1</commons.rc.version>
     <checkstyle.version>3.1.2</checkstyle.version>
-    <checkstyle.dep.version>9.0</checkstyle.dep.version>
+    <checkstyle.dep.version>9.0.1</checkstyle.dep.version>
 
     <commons.site.path>collections</commons.site.path>
     <commons.scmPubUrl>https://svn.apache.org/repos/infra/websites/production/commons/content/proper/commons-collections</commons.scmPubUrl>

src/changes/changes.xml

@@ -207,6 +207,7 @@
       Bump checkstyle from 8.44 to 8.45 #245.
       Bump checkstyle from 8.45 to 8.45.1 #246.
       Bump checkstyle from 8.45.1 to 9.0 #248.
+      Bump checkstyle from 9.0 to 9.0.1 #257.
     </action>
     <action dev="ggregory" type="update" due-to="Chen, Bruno P. Kinoshita, Gary Gregory, Michael Osipov">
       Better NPE messages in CollectionUtils with Objects.requireNonNull #117.