Bump bom-2.319.x from 1539.v6a_85813638f8 to 1556.vfc6a_f216e3c6

Bumps [bom-2.319.x](https://github.com/jenkinsci/bom) from 1539.v6a_85813638f8 to 1556.vfc6a_f216e3c6.
- [Release notes](https://github.com/jenkinsci/bom/releases)
- [Commits](https://github.com/jenkinsci/bom/commits)

---
updated-dependencies:
- dependency-name: io.jenkins.tools.bom:bom-2.319.x
  dependency-type: direct:production
...

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

pom.xml

@@ -54,7 +54,7 @@
       <dependency>
         <groupId>io.jenkins.tools.bom</groupId>
         <artifactId>bom-2.319.x</artifactId>
-        <version>1539.v6a_85813638f8</version>
+        <version>1556.vfc6a_f216e3c6</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>