Bump io.jenkins.tools.bom:bom-2.426.x

Bumps [io.jenkins.tools.bom:bom-2.426.x](https://github.com/jenkinsci/bom) from 2791.v707dc5a_1626d to 2815.vf5d6f093b_23e.
- [Release notes](https://github.com/jenkinsci/bom/releases)
- [Commits](https://github.com/jenkinsci/bom/commits)

---
updated-dependencies:
- dependency-name: io.jenkins.tools.bom:bom-2.426.x
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Diff for: pom.xml

@@ -49,7 +49,7 @@
             <dependency>
                 <groupId>io.jenkins.tools.bom</groupId>
                 <artifactId>bom-2.426.x</artifactId>
-                <version>2791.v707dc5a_1626d</version>
+                <version>2815.vf5d6f093b_23e</version>
                 <scope>import</scope>
                 <type>pom</type>
             </dependency>