Bump version-number from 1.6 to 1.7

Bumps [version-number](https://github.com/jenkinsci/lib-version-number) from 1.6 to 1.7.
- [Release notes](https://github.com/jenkinsci/lib-version-number/releases)
- [Changelog](https://github.com/jenkinsci/lib-version-number/blob/master/CHANGELOG.md)
- [Commits](jenkinsci/lib-version-number@version-number-1.6...version-number-1.7)

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

pom.xml

@@ -166,7 +166,7 @@
     <dependency>
       <groupId>org.jenkins-ci</groupId>
       <artifactId>version-number</artifactId>
-      <version>1.6</version>
+      <version>1.7</version>
     </dependency>
   </dependencies>