Bump pact.version from 4.6.14 to 4.6.15 (#560)

Bumps `pact.version` from 4.6.14 to 4.6.15.

Updates `au.com.dius.pact.consumer:junit5` from 4.6.14 to 4.6.15
- [Release notes](https://github.com/pact-foundation/pact-jvm/releases)
- [Changelog](https://github.com/pact-foundation/pact-jvm/blob/master/CHANGELOG.md)
- [Commits](https://github.com/pact-foundation/pact-jvm/commits)

Updates `au.com.dius.pact.provider:junit5` from 4.6.14 to 4.6.15
- [Release notes](https://github.com/pact-foundation/pact-jvm/releases)
- [Changelog](https://github.com/pact-foundation/pact-jvm/blob/master/CHANGELOG.md)
- [Commits](https://github.com/pact-foundation/pact-jvm/commits)

---
updated-dependencies:
- dependency-name: au.com.dius.pact.consumer:junit5
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: au.com.dius.pact.provider:junit5
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pom.xml

@@ -18,7 +18,7 @@
   <properties>
     <java.version>19</java.version>
     <dropwizard.version>4.0.10</dropwizard.version>
-    <pact.version>4.6.14</pact.version>
+    <pact.version>4.6.15</pact.version>
     <kotlin.version>2.0.21</kotlin.version>
     <jersey.version>3.1.9</jersey.version>
     <netty.version>4.1.114.Final</netty.version>