Bump extra-enforcer-rules from 1.4 to 1.5.1

Bumps [extra-enforcer-rules](https://github.com/mojohaus/extra-enforcer-rules) from 1.4 to 1.5.1.
- [Release notes](https://github.com/mojohaus/extra-enforcer-rules/releases)
- [Commits](https://github.com/mojohaus/extra-enforcer-rules/compare/extra-enforcer-rules-1.4...extra-enforcer-rules-1.5.1)

---
updated-dependencies:
- dependency-name: org.codehaus.mojo:extra-enforcer-rules
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/pom.xml b/pom.xml
index 04a0166..8b57f6f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -139,7 +139,7 @@
             <dependency>
               <groupId>org.codehaus.mojo</groupId>
               <artifactId>extra-enforcer-rules</artifactId>
-              <version>1.4</version>
+              <version>1.5.1</version>
             </dependency>
           </dependencies>
         </plugin>
@@ -165,7 +165,7 @@
           <dependency>
             <groupId>org.codehaus.mojo</groupId>
             <artifactId>extra-enforcer-rules</artifactId>
-            <version>1.4</version>
+            <version>1.5.1</version>
           </dependency>
         </dependencies>
       </plugin>