Bump com.uber.nullaway:nullaway from 0.13.3 to 0.13.4

Bumps [com.uber.nullaway:nullaway](https://github.com/uber/NullAway) from 0.13.3 to 0.13.4.
- [Changelog](https://github.com/uber/NullAway/blob/master/CHANGELOG.md)
- [Commits](uber/NullAway@v0.13.3...v0.13.4)

---
updated-dependencies:
- dependency-name: com.uber.nullaway:nullaway
  dependency-version: 0.13.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pom.xml

@@ -127,7 +127,7 @@
               <path>
                 <groupId>com.uber.nullaway</groupId>
                 <artifactId>nullaway</artifactId>
-                <version>0.13.3</version>
+                <version>0.13.4</version>
               </path>
             </annotationProcessorPaths>
             <failOnWarning>true</failOnWarning>