Bump com.palantir.javapoet:javapoet from 0.20.0 to 0.21.0

Bumps [com.palantir.javapoet:javapoet](https://github.com/palantir/javapoet) from 0.20.0 to 0.21.0.
- [Release notes](https://github.com/palantir/javapoet/releases)
- [Commits](palantir/javapoet@0.20.0...0.21.0)

---
updated-dependencies:
- dependency-name: com.palantir.javapoet:javapoet
  dependency-version: 0.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pom.xml

@@ -58,7 +58,7 @@
       <dependency>
         <groupId>com.palantir.javapoet</groupId>
         <artifactId>javapoet</artifactId>
-        <version>0.20.0</version>
+        <version>0.21.0</version>
       </dependency>
 
       <dependency>