Revert "Bump org.jenkins-ci.plugins:credentials in /bom-weekly (jenki…

…nsci#2617)"

https://github.com/jenkinsci/credentials-plugin/releases/tag/1305.v04f5ec1f3743
notes that a regression is being investigated as reported in
jenkinsci/credentials-plugin#490 (comment)

jenkinsci/credentials-plugin#492 submitted to
resolve the issue

This reverts commit 2a4afc3.

bom-weekly/pom.xml

@@ -494,7 +494,7 @@
       <dependency>
         <groupId>org.jenkins-ci.plugins</groupId>
         <artifactId>credentials</artifactId>
-        <version>1305.v04f5ec1f3743</version>
+        <version>1304.v5ec13eecef46</version>
       </dependency>
       <dependency>
         <groupId>org.jenkins-ci.plugins</groupId>