Remove hard-coded java-version in Security Scan

.github/workflows/jenkins-security-scan.yml

@@ -1,11 +1,11 @@
 # More information about the Jenkins security scan can be found at the developer docs: https://www.jenkins.io/redirect/jenkins-security-scan/
 
 name: Jenkins Security Scan
+
 on:
   push:
     branches:
-      - "master"
-      - "main"
+      - master
   pull_request:
     types: [ opened, synchronize, reopened ]
   workflow_dispatch:
@@ -20,4 +20,4 @@ jobs:
     uses: jenkins-infra/jenkins-security-scan/.github/workflows/jenkins-security-scan.yaml@v2
     with:
       java-cache: 'maven' # Optionally enable use of a build dependency cache. Specify 'maven' or 'gradle' as appropriate.
-      java-version: 11 # What version of Java to set up for the build.
+      # java-version: 21 # Optionally specify what version of Java to set up for the build, or remove to use a recent default.