Bump the build-dependencies group with 2 updates

Bumps the build-dependencies group with 2 updates: [com.puppycrawl.tools:checkstyle](https://github.com/checkstyle/checkstyle) and [org.codehaus.mojo:flatten-maven-plugin](https://github.com/mojohaus/flatten-maven-plugin).


Updates `com.puppycrawl.tools:checkstyle` from 10.25.0 to 10.25.1
- [Release notes](https://github.com/checkstyle/checkstyle/releases)
- [Commits](checkstyle/checkstyle@checkstyle-10.25.0...checkstyle-10.25.1)

Updates `org.codehaus.mojo:flatten-maven-plugin` from 1.7.0 to 1.7.1
- [Release notes](https://github.com/mojohaus/flatten-maven-plugin/releases)
- [Commits](mojohaus/flatten-maven-plugin@1.7.0...1.7.1)

---
updated-dependencies:
- dependency-name: com.puppycrawl.tools:checkstyle
  dependency-version: 10.25.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: build-dependencies
- dependency-name: org.codehaus.mojo:flatten-maven-plugin
  dependency-version: 1.7.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: build-dependencies
...

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

Author: dependabot[bot]

pom.xml

@@ -219,7 +219,7 @@
             overridden by a CI job of the Checkstyle project so that they can
             check for regressions. Which is obviously good for us, too.
          -->
-        <puppycrawl.checkstyle.version>10.25.0</puppycrawl.checkstyle.version>
+        <puppycrawl.checkstyle.version>10.25.1</puppycrawl.checkstyle.version>
 
         <!-- Asciidoctor -->
 
@@ -259,7 +259,7 @@
         <version.surefire.plugin>3.5.3</version.surefire.plugin>
         <version.surefire.plugin.java-version.asm>9.8</version.surefire.plugin.java-version.asm>
         <version.failsafe.plugin>${version.surefire.plugin}</version.failsafe.plugin>
-        <version.flatten-maven-plugin>1.7.0</version.flatten-maven-plugin>
+        <version.flatten-maven-plugin>1.7.1</version.flatten-maven-plugin>
         <version.moditect.plugin>1.2.2.Final</version.moditect.plugin>
         <version.sisu-maven-plugin>0.9.0.M4</version.sisu-maven-plugin>
         <version.versions.plugin>2.18.0</version.versions.plugin>