Bump maven-javadoc-plugin from 3.0.1 to 3.2.0

Bumps [maven-javadoc-plugin](https://github.com/apache/maven-javadoc-plugin) from 3.0.1 to 3.2.0.
- [Release notes](https://github.com/apache/maven-javadoc-plugin/releases)
- [Commits](https://github.com/apache/maven-javadoc-plugin/compare/maven-javadoc-plugin-3.0.1...maven-javadoc-plugin-3.2.0)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

See gh-414.

docs/pom.xml

@@ -41,7 +41,7 @@
 				<plugin>
 					<groupId>org.apache.maven.plugins</groupId>
 					<artifactId>maven-javadoc-plugin</artifactId>
-					<version>2.10.4</version>
+					<version>3.2.0</version>
 				</plugin>
 				<plugin>
 					<groupId>org.apache.maven.plugins</groupId>

pom.xml

@@ -217,7 +217,7 @@
 				<plugin>
 					<groupId>org.apache.maven.plugins</groupId>
 					<artifactId>maven-javadoc-plugin</artifactId>
-					<version>3.0.1</version>
+					<version>3.2.0</version>
 				</plugin>
 
 				<plugin>

spring-cloud-vault-dependencies/pom.xml

@@ -105,7 +105,7 @@
 				<plugin>
 					<groupId>org.apache.maven.plugins</groupId>
 					<artifactId>maven-javadoc-plugin</artifactId>
-					<version>3.0.1</version>
+					<version>3.2.0</version>
 				</plugin>
 
 				<plugin>