Bump io.jenkins.tools.bom:bom-2.504.x

Bumps [io.jenkins.tools.bom:bom-2.504.x](https://github.com/jenkinsci/bom) from 5015.vb_52d36583443 to 5294.va_d2e144c80e1.
- [Release notes](https://github.com/jenkinsci/bom/releases)
- [Commits](https://github.com/jenkinsci/bom/commits)

---
updated-dependencies:
- dependency-name: io.jenkins.tools.bom:bom-2.504.x
  dependency-version: 5294.va_d2e144c80e1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pom.xml

@@ -55,7 +55,7 @@
             <dependency>
                 <groupId>io.jenkins.tools.bom</groupId>
                 <artifactId>bom-${jenkins.baseline}.x</artifactId>
-                <version>5015.vb_52d36583443</version>
+                <version>5294.va_d2e144c80e1</version>
                 <scope>import</scope>
                 <type>pom</type>
             </dependency>