Bump io.jenkins.plugins:custom-folder-icon in /bom-weekly

Bumps [io.jenkins.plugins:custom-folder-icon](https://github.com/jenkinsci/custom-folder-icon-plugin) from 2.10 to 2.12.
- [Release notes](https://github.com/jenkinsci/custom-folder-icon-plugin/releases)
- [Commits](jenkinsci/custom-folder-icon-plugin@custom-folder-icon-2.10...custom-folder-icon-2.12)

---
updated-dependencies:
- dependency-name: io.jenkins.plugins:custom-folder-icon
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

bom-weekly/pom.xml

@@ -204,7 +204,7 @@
       <dependency>
         <groupId>io.jenkins.plugins</groupId>
         <artifactId>custom-folder-icon</artifactId>
-        <version>2.10</version>
+        <version>2.12</version>
       </dependency>
       <dependency>
         <groupId>io.jenkins.plugins</groupId>