Bump workflow-support-plugin.version from 3.7 to 3.8 in /bom-latest

Bumps `workflow-support-plugin.version` from 3.7 to 3.8.

Updates `workflow-support` from 3.7 to 3.8
- [Release notes](https://github.com/jenkinsci/workflow-support-plugin/releases)
- [Changelog](https://github.com/jenkinsci/workflow-support-plugin/blob/master/CHANGELOG.md)
- [Commits](jenkinsci/workflow-support-plugin@workflow-support-3.7...workflow-support-3.8)

Updates `workflow-support` from 3.7 to 3.8
- [Release notes](https://github.com/jenkinsci/workflow-support-plugin/releases)
- [Changelog](https://github.com/jenkinsci/workflow-support-plugin/blob/master/CHANGELOG.md)
- [Commits](jenkinsci/workflow-support-plugin@workflow-support-3.7...workflow-support-3.8)

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

bom-latest/pom.xml

@@ -20,7 +20,7 @@
         <workflow-job-plugin.version>2.40</workflow-job-plugin.version>
         <workflow-multibranch-plugin.version>2.22</workflow-multibranch-plugin.version>
         <workflow-step-api-plugin.version>2.23</workflow-step-api-plugin.version>
-        <workflow-support-plugin.version>3.7</workflow-support-plugin.version>
+        <workflow-support-plugin.version>3.8</workflow-support-plugin.version>
     </properties>
     <dependencyManagement>
         <dependencies>