[maven] (deps): Bump version.imposter from 3.31.3 to 3.31.6

Bumps `version.imposter` from 3.31.3 to 3.31.6.

Updates `io.gatehill.imposter:config-dynamic` from 3.31.3 to 3.31.6

Updates `io.gatehill.imposter:distro-embedded` from 3.31.3 to 3.31.6

Updates `io.gatehill.imposter:imposter-server` from 3.31.3 to 3.31.6

Updates `io.gatehill.imposter:mock-openapi` from 3.31.3 to 3.31.6

Updates `io.gatehill.imposter:mock-rest` from 3.31.3 to 3.31.6

---
updated-dependencies:
- dependency-name: io.gatehill.imposter:config-dynamic
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: io.gatehill.imposter:distro-embedded
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: io.gatehill.imposter:imposter-server
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: io.gatehill.imposter:mock-openapi
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: io.gatehill.imposter:mock-rest
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

parent/pom.xml

@@ -123,7 +123,7 @@
     <version.apache-httpclient5>5.2.1</version.apache-httpclient5>
     <version.brotli-dec>0.1.2</version.brotli-dec>
     <version.hamcrest>2.2</version.hamcrest>
-    <version.imposter>3.31.3</version.imposter>
+    <version.imposter>3.31.6</version.imposter>
     <version.mapstruct>1.5.5.Final</version.mapstruct>
     <version.quarkus>3.5.0</version.quarkus>
     <version.swagger-annotations>1.6.12</version.swagger-annotations>