Bump org.apache.maven.plugins:maven-javadoc-plugin in /json-smart (#206)

Bumps [org.apache.maven.plugins:maven-javadoc-plugin](https://github.com/apache/maven-javadoc-plugin) from 3.7.0 to 3.8.0.
- [Release notes](https://github.com/apache/maven-javadoc-plugin/releases)
- [Commits](apache/maven-javadoc-plugin@maven-javadoc-plugin-3.7.0...maven-javadoc-plugin-3.8.0)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-javadoc-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

json-smart/pom.xml

@@ -114,7 +114,7 @@ limitations under the License.
 					<plugin>
 						<groupId>org.apache.maven.plugins</groupId>
 						<artifactId>maven-javadoc-plugin</artifactId>
-						<version>3.7.0</version>
+						<version>3.8.0</version>
 						<configuration>
                           <source>8</source>
                 		</configuration>
@@ -204,7 +204,7 @@ limitations under the License.
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>3.7.0</version>
+				<version>3.8.0</version>
 				<!-- ONLY NEEDED With jdk 1.7+ -->
 				<configuration>
                     <source>8</source>