Bump impsort-maven-plugin from 1.7.0 to 1.8.0

Bumps [impsort-maven-plugin](https://github.com/revelc/impsort-maven-plugin) from 1.7.0 to 1.8.0.
- [Release notes](https://github.com/revelc/impsort-maven-plugin/releases)
- [Commits](revelc/impsort-maven-plugin@impsort-maven-plugin-1.7.0...impsort-maven-plugin-1.8.0)

---
updated-dependencies:
- dependency-name: net.revelc.code:impsort-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

parent-pom/pom.xml

@@ -53,7 +53,7 @@
         <version.surefire.plugin>3.0.0-M7</version.surefire.plugin>
         <version.nexus.staging.maven.plugin>1.6.13</version.nexus.staging.maven.plugin>
         <version.formatter.maven.plugin>2.21.0</version.formatter.maven.plugin>
-        <version.impsort.maven.plugin>1.7.0</version.impsort.maven.plugin>
+        <version.impsort.maven.plugin>1.8.0</version.impsort.maven.plugin>
     </properties>
 
     <build>