Bump the standard-plugins group with 6 updates (#2)

Bumps the standard-plugins group with 6 updates:

| Package | From | To |
| --- | --- | --- |
| [org.codehaus.mojo:flatten-maven-plugin](https://github.com/mojohaus/flatten-maven-plugin) | `1.3.0` | `1.6.0` |
| [org.apache.maven.plugins:maven-surefire-plugin](https://github.com/apache/maven-surefire) | `3.0.0-M5` | `3.2.5` |
| [org.apache.maven.plugins:maven-failsafe-plugin](https://github.com/apache/maven-surefire) | `3.0.0-M5` | `3.2.5` |
| [org.apache.maven.plugins:maven-source-plugin](https://github.com/apache/maven-source-plugin) | `3.2.1` | `3.3.1` |
| [org.apache.maven.plugins:maven-javadoc-plugin](https://github.com/apache/maven-javadoc-plugin) | `3.5.0` | `3.6.3` |
| [org.apache.maven.plugins:maven-gpg-plugin](https://github.com/apache/maven-gpg-plugin) | `3.2.2` | `3.2.4` |


Updates `org.codehaus.mojo:flatten-maven-plugin` from 1.3.0 to 1.6.0
- [Release notes](https://github.com/mojohaus/flatten-maven-plugin/releases)
- [Commits](mojohaus/flatten-maven-plugin@flatten-maven-plugin-1.3.0...1.6.0)

Updates `org.apache.maven.plugins:maven-surefire-plugin` from 3.0.0-M5 to 3.2.5
- [Release notes](https://github.com/apache/maven-surefire/releases)
- [Commits](apache/maven-surefire@surefire-3.0.0-M5...surefire-3.2.5)

Updates `org.apache.maven.plugins:maven-failsafe-plugin` from 3.0.0-M5 to 3.2.5
- [Release notes](https://github.com/apache/maven-surefire/releases)
- [Commits](apache/maven-surefire@surefire-3.0.0-M5...surefire-3.2.5)

Updates `org.apache.maven.plugins:maven-source-plugin` from 3.2.1 to 3.3.1
- [Commits](apache/maven-source-plugin@maven-source-plugin-3.2.1...maven-source-plugin-3.3.1)

Updates `org.apache.maven.plugins:maven-javadoc-plugin` from 3.5.0 to 3.6.3
- [Release notes](https://github.com/apache/maven-javadoc-plugin/releases)
- [Commits](apache/maven-javadoc-plugin@maven-javadoc-plugin-3.5.0...maven-javadoc-plugin-3.6.3)

Updates `org.apache.maven.plugins:maven-gpg-plugin` from 3.2.2 to 3.2.4
- [Release notes](https://github.com/apache/maven-gpg-plugin/releases)
- [Commits](apache/maven-gpg-plugin@maven-gpg-plugin-3.2.2...maven-gpg-plugin-3.2.4)

---
updated-dependencies:
- dependency-name: org.codehaus.mojo:flatten-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: standard-plugins
- dependency-name: org.apache.maven.plugins:maven-surefire-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: standard-plugins
- dependency-name: org.apache.maven.plugins:maven-failsafe-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: standard-plugins
- dependency-name: org.apache.maven.plugins:maven-source-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: standard-plugins
- dependency-name: org.apache.maven.plugins:maven-javadoc-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: standard-plugins
- dependency-name: org.apache.maven.plugins:maven-gpg-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: standard-plugins
...

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

pom.xml

@@ -57,12 +57,12 @@
         <maven.compiler.target>17</maven.compiler.target>
 
         <!-- plugin versions -->
-        <flatten-maven-plugin.version>1.3.0</flatten-maven-plugin.version>
-        <maven-surefire-plugin.version>3.0.0-M5</maven-surefire-plugin.version>
-        <maven-failsafe-plugin.version>3.0.0-M5</maven-failsafe-plugin.version>
-        <maven-source-plugin.version>3.2.1</maven-source-plugin.version>
-        <maven-javadoc-plugin.version>3.5.0</maven-javadoc-plugin.version>
-        <maven-gpg-plugin.version>3.2.2</maven-gpg-plugin.version>
+        <flatten-maven-plugin.version>1.6.0</flatten-maven-plugin.version>
+        <maven-surefire-plugin.version>3.2.5</maven-surefire-plugin.version>
+        <maven-failsafe-plugin.version>3.2.5</maven-failsafe-plugin.version>
+        <maven-source-plugin.version>3.3.1</maven-source-plugin.version>
+        <maven-javadoc-plugin.version>3.6.3</maven-javadoc-plugin.version>
+        <maven-gpg-plugin.version>3.2.4</maven-gpg-plugin.version>
         <central-publishing-maven-plugin.version>0.4.0</central-publishing-maven-plugin.version>
 
         <!-- dependency versions -->