Update Jenkins Security Scan action (#47)

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

@@ -4,7 +4,6 @@ name: Jenkins Security Scan
 on:
   push:
     branches:
-      - "master"
       - "main"
   pull_request:
     types: [ opened, synchronize, reopened ]
@@ -20,4 +19,4 @@ 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: 17 # 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.