ci: use https for scm information to enable token authentication

Author: BernhardFuchs

pom.xml

@@ -11,8 +11,8 @@
 
 	<scm>
 		<url>https://github.com/danubetech/verifiable-credentials-java</url>
-		<connection>scm:git:git://github.com/danubetech/verifiable-credentials-java.git</connection>
-		<developerConnection>scm:git:git@github.com:danubetech/verifiable-credentials-java.git</developerConnection>
+		<connection>scm:git:https://github.com/danubetech/verifiable-credentials-java.git</connection>
+		<developerConnection>scm:git:https://github.com/danubetech/verifiable-credentials-java.git</developerConnection>
 	</scm>
 
 	<issueManagement>