Bump grumpy-core from 0.4.5 to 0.4.7

Bumps [grumpy-core](https://github.com/davidmoten/grumpy) from 0.4.5 to 0.4.7.
- [Release notes](https://github.com/davidmoten/grumpy/releases)
- [Changelog](https://github.com/davidmoten/grumpy/blob/master/RELEASE_NOTES.md)
- [Commits](davidmoten/grumpy@0.4.5...0.4.7)

---
updated-dependencies:
- dependency-name: com.github.davidmoten:grumpy-core
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -120,7 +120,7 @@
         <dependency>
             <groupId>com.github.davidmoten</groupId>
             <artifactId>grumpy-core</artifactId>
-            <version>0.4.5</version>
+            <version>0.4.7</version>
             <scope>test</scope>
         </dependency>