Bump org.sonatype.oss:oss-parent from 7 to 9

Bumps org.sonatype.oss:oss-parent from 7 to 9.

---
updated-dependencies:
- dependency-name: org.sonatype.oss:oss-parent
  dependency-version: '9'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

pom.xml

@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.sonatype.oss</groupId>
     <artifactId>oss-parent</artifactId>
-    <version>7</version>
+    <version>9</version>
   </parent>
 
   <groupId>org.gaul</groupId>