Bump io7m.maven-api.version from 3.8.6 to 3.9.6

Bumps `io7m.maven-api.version` from 3.8.6 to 3.9.6.

Updates `org.apache.maven:maven-plugin-api` from 3.8.6 to 3.9.6
- [Release notes](https://github.com/apache/maven/releases)
- [Commits](apache/maven@maven-3.8.6...maven-3.9.6)

Updates `org.apache.maven:maven-core` from 3.8.6 to 3.9.6
- [Release notes](https://github.com/apache/maven/releases)
- [Commits](apache/maven@maven-3.8.6...maven-3.9.6)

Updates `org.apache.maven:maven-settings` from 3.8.6 to 3.9.6
- [Release notes](https://github.com/apache/maven/releases)
- [Commits](apache/maven@maven-3.8.6...maven-3.9.6)

Updates `org.apache.maven:maven-model` from 3.8.6 to 3.9.6
- [Release notes](https://github.com/apache/maven/releases)
- [Commits](apache/maven@maven-3.8.6...maven-3.9.6)

Updates `org.apache.maven:maven-compat` from 3.8.6 to 3.9.6
- [Release notes](https://github.com/apache/maven/releases)
- [Commits](apache/maven@maven-3.8.6...maven-3.9.6)

Updates `org.apache.maven:maven-artifact` from 3.8.6 to 3.9.6
- [Release notes](https://github.com/apache/maven/releases)
- [Commits](apache/maven@maven-3.8.6...maven-3.9.6)

---
updated-dependencies:
- dependency-name: org.apache.maven:maven-plugin-api
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.apache.maven:maven-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.apache.maven:maven-settings
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.apache.maven:maven-model
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.apache.maven:maven-compat
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.apache.maven:maven-artifact
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -32,7 +32,7 @@
     <com.io7m.changelog.version>4.1.0</com.io7m.changelog.version>
     <io7m.api.previousVersion>5.0.0-beta0001</io7m.api.previousVersion>
     <io7m.java.targetJavaVersion>21</io7m.java.targetJavaVersion>
-    <io7m.maven-api.version>3.8.6</io7m.maven-api.version>
+    <io7m.maven-api.version>3.9.6</io7m.maven-api.version>
     <io7m.org.immutables.version>2.9.3</io7m.org.immutables.version>
   </properties>