Update dependencies

maven-scm-provider-gitexe         1.9.5
maven-scm-manager-plexus          1.9.5
maven-scm-provider-svnjava        2.1.1
org.jenkins-ci.plugins.subversion 2.5.7

maven-scm update pulls in fix https://issues.apache.org/jira/browse/SCM-772
which improves Git handling of file paths with spaces in them.

Author: rodrigc

pom.xml

@@ -238,7 +238,7 @@
   	<dependency>
       <groupId>org.apache.maven.scm</groupId>
       <artifactId>maven-scm-manager-plexus</artifactId>
-      <version>1.9.1</version>
+      <version>1.9.5</version>
       <!-- Prevent pulling in old stuff. We use the sisu plexus from above. -->
       <exclusions>
       	<exclusion>
@@ -251,19 +251,19 @@
     <dependency>
       <groupId>org.jenkins-ci.plugins</groupId>
       <artifactId>subversion</artifactId>
-	  <version>1.39</version>
+	  <version>2.5.7</version>
     </dependency>    
     <!-- providers declaration -->
     <dependency>
       <groupId>com.google.code.maven-scm-provider-svnjava</groupId>
       <artifactId>maven-scm-provider-svnjava</artifactId>
-      <version>1.12</version>
+      <version>2.1.1</version>
     </dependency>
 
     <dependency>
       <groupId>org.apache.maven.scm</groupId>
       <artifactId>maven-scm-provider-gitexe</artifactId>
-      <version>1.9.1</version>
+      <version>1.9.5</version>
     </dependency>