Updates jgit to 5.12.0; fixes gh-1689

pom.xml

@@ -40,7 +40,7 @@
 		<hoverfly-junit.version>0.2.2</hoverfly-junit.version>
 		<commons-text.version>1.9</commons-text.version>
 		<handlebars.version>4.2.0</handlebars.version>
-		<jgit.version>5.5.1.201910021850-r</jgit.version>
+		<jgit.version>5.12.0.202106070339-r</jgit.version>
 		<javax-inject.version>1</javax-inject.version>
 		<json-unit-assertj.version>2.27.0</json-unit-assertj.version>
 
@@ -253,6 +253,11 @@
 				<artifactId>org.eclipse.jgit</artifactId>
 				<version>${jgit.version}</version>
 			</dependency>
+			<dependency>
+				<groupId>org.eclipse.jgit</groupId>
+				<artifactId>org.eclipse.jgit.ssh.jsch</artifactId>
+				<version>${jgit.version}</version>
+			</dependency>
 			<!-- a proxy to ssh-agent and Pageant in Java -->
 			<dependency>
 				<groupId>com.jcraft</groupId>

spring-cloud-contract-stub-runner/pom.xml

@@ -116,6 +116,10 @@
 			<groupId>org.eclipse.jgit</groupId>
 			<artifactId>org.eclipse.jgit</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>org.eclipse.jgit</groupId>
+			<artifactId>org.eclipse.jgit.ssh.jsch</artifactId>
+		</dependency>
 		<!-- a proxy to ssh-agent and Pageant in Java -->
 		<dependency>
 			<groupId>com.jcraft</groupId>

spring-cloud-contract-stub-runner/src/main/java/org/springframework/cloud/contract/stubrunner/GitRepo.java

@@ -51,6 +51,7 @@ import org.eclipse.jgit.lib.Ref;
 import org.eclipse.jgit.transport.CredentialsProvider;
 import org.eclipse.jgit.transport.JschConfigSessionFactory;
 import org.eclipse.jgit.transport.OpenSshConfig;
+import org.eclipse.jgit.transport.SshSessionFactory;
 import org.eclipse.jgit.transport.SshTransport;
 import org.eclipse.jgit.transport.URIish;
 import org.eclipse.jgit.transport.UsernamePasswordCredentialsProvider;
@@ -326,7 +327,7 @@ class GitRepo {
 
 		final CredentialsProvider provider;
 
-		private final JschConfigSessionFactory factory = new JschConfigSessionFactory() {
+		private final SshSessionFactory factory = new JschConfigSessionFactory() {
 
 			@Override
 			protected void configure(OpenSshConfig.Host host, Session session) {