Include 'sourceUrl' column in dependencies report even when empty (#57163)

Co-authored-by: Elastic Machine <[email protected]>

Author: mark-vieira

buildSrc/src/main/groovy/org/elasticsearch/gradle/DependenciesInfoTask.groovy

@@ -145,14 +145,14 @@ class DependenciesInfoTask extends ConventionTask {
             // As we have the license file, we create a Custom entry with the URL to this license file.
             final gitBranch = System.getProperty('build.branch', 'master')
             final String githubBaseURL = "https://raw.githubusercontent.com/elastic/elasticsearch/${gitBranch}/"
-            licenseType = "${licenseInfo.identifier};${license.getCanonicalPath().replaceFirst('.*/elasticsearch/', githubBaseURL)}"
+            licenseType = "${licenseInfo.identifier};${license.getCanonicalPath().replaceFirst('.*/elasticsearch/', githubBaseURL)},"
         } else {
-            licenseType = licenseInfo.identifier
+            licenseType = "${licenseInfo.identifier},"
         }
 
         if (licenseInfo.sourceRedistributionRequired) {
             File sources = getDependencyInfoFile(group, name, 'SOURCES')
-            licenseType += ",${sources.text.trim()}"
+            licenseType += "${sources.text.trim()}"
         }
 
         return licenseType