Bump the maven-build-plugins group with 3 updates

Bumps the maven-build-plugins group with 3 updates: [org.apache.maven.plugins:maven-site-plugin](https://github.com/apache/maven-site-plugin), [org.apache.maven.plugins:maven-javadoc-plugin](https://github.com/apache/maven-javadoc-plugin) and org.sonatype.plugins:nexus-staging-maven-plugin.


Updates `org.apache.maven.plugins:maven-site-plugin` from 4.0.0-M14 to 4.0.0-M15
- [Commits](apache/maven-site-plugin@maven-site-plugin-4.0.0-M14...maven-site-plugin-4.0.0-M15)

Updates `org.apache.maven.plugins:maven-javadoc-plugin` from 3.6.3 to 3.7.0
- [Release notes](https://github.com/apache/maven-javadoc-plugin/releases)
- [Commits](apache/maven-javadoc-plugin@maven-javadoc-plugin-3.6.3...maven-javadoc-plugin-3.7.0)

Updates `org.sonatype.plugins:nexus-staging-maven-plugin` from 1.6.13 to 1.7.0

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-site-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: maven-build-plugins
- dependency-name: org.apache.maven.plugins:maven-javadoc-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: maven-build-plugins
- dependency-name: org.sonatype.plugins:nexus-staging-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: maven-build-plugins
...

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

pom.xml

@@ -136,7 +136,7 @@
                 <!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
                 <plugin>
                     <artifactId>maven-site-plugin</artifactId>
-                    <version>4.0.0-M14</version>
+                    <version>4.0.0-M15</version>
                 </plugin>
                 <plugin>
                     <artifactId>maven-project-info-reports-plugin</artifactId>
@@ -167,7 +167,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
-                <version>3.6.3</version>
+                <version>3.7.0</version>
                 <executions>
                     <execution>
                         <id>attach-javadocs</id>
@@ -237,7 +237,7 @@
                     <plugin>
                         <groupId>org.sonatype.plugins</groupId>
                         <artifactId>nexus-staging-maven-plugin</artifactId>
-                        <version>1.6.13</version>
+                        <version>1.7.0</version>
                         <extensions>true</extensions>
                         <configuration>
                             <serverId>ossrh</serverId>