Bump script-security from 1158.v7c1b_73a_69a_08 to 999999-SNAPSHOT

Bumps [script-security](https://github.com/jenkinsci/script-security-plugin) from 1158.v7c1b_73a_69a_08 to 999999-SNAPSHOT.
- [Release notes](https://github.com/jenkinsci/script-security-plugin/releases)
- [Changelog](https://github.com/jenkinsci/script-security-plugin/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jenkinsci/script-security-plugin/commits)

---
updated-dependencies:
- dependency-name: org.jenkins-ci.plugins:script-security
  dependency-type: direct:production
...

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

atlas-jenkins-pipeline-test/build.gradle

@@ -27,7 +27,7 @@ dependencies {
     api "com.lesfurets:jenkins-pipeline-unit:1.9"
     implementation 'org.codehaus.groovy:groovy-all:2.4.+'
     implementation "org.spockframework:spock-core:1.3-groovy-2.4"
-    implementation  group: "org.jenkins-ci.plugins", name: "script-security", version:"1158.v7c1b_73a_69a_08", ext: "jar"
+    implementation  group: "org.jenkins-ci.plugins", name: "script-security", version:"999999-SNAPSHOT", ext: "jar"
     implementation  group: "org.kohsuke", name: "groovy-sandbox", version:"1.27", ext: "jar"
 
     //needed jenkins stuff used implicitly