Bump com.axis.system.jenkins.plugins.downstream:downstream-build-cache

Bumps [com.axis.system.jenkins.plugins.downstream:downstream-build-cache](https://github.com/jenkinsci/downstream-build-cache-plugin) from 1.3 to 1.7.
- [Release notes](https://github.com/jenkinsci/downstream-build-cache-plugin/releases)
- [Changelog](https://github.com/jenkinsci/downstream-build-cache-plugin/blob/master/CHANGELOG.md)
- [Commits](jenkinsci/downstream-build-cache-plugin@v1.3...v1.7)

---
updated-dependencies:
- dependency-name: com.axis.system.jenkins.plugins.downstream:downstream-build-cache
  dependency-version: '1.7'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pom.xml

@@ -167,7 +167,7 @@
         <dependency>
             <groupId>com.axis.system.jenkins.plugins.downstream</groupId>
             <artifactId>downstream-build-cache</artifactId>
-            <version>1.3</version>
+            <version>1.7</version>
             <optional>true</optional>
         </dependency>
         <dependency>