update libs add plain-creds to pom

pom.xml

@@ -103,36 +103,36 @@
         <dependency>
             <groupId>com.squareup.retrofit2</groupId>
             <artifactId>converter-gson</artifactId>
-            <version>2.4.0</version>
+            <version>2.5.0</version>
             <type>jar</type>
         </dependency>
         <dependency>
             <groupId>com.squareup.retrofit2</groupId>
             <artifactId>retrofit</artifactId>
-            <version>2.4.0</version>
+            <version>2.5.0</version>
         </dependency>
         <dependency>
             <groupId>com.squareup.okhttp3</groupId>
             <artifactId>okhttp</artifactId>
-            <version>3.11.0</version>
+            <version>3.13.1</version>
             <type>jar</type>
         </dependency>
         <dependency>
             <groupId>com.squareup.okhttp3</groupId>
             <artifactId>logging-interceptor</artifactId>
-            <version>3.11.0</version>
+            <version>3.13.1</version>
             <type>jar</type>
         </dependency>
         <dependency>
             <groupId>org.jenkins-ci.plugins</groupId>
             <artifactId>credentials</artifactId>
-            <version>2.1.16</version>
+            <version>2.1.18</version>
             <type>jar</type>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-            <version>2.9.4</version>
+            <version>2.9.8</version>
             <type>jar</type>
         </dependency>
         <dependency>
@@ -160,5 +160,11 @@
             <version>${junit.jupiter.version}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.jenkins-ci.plugins</groupId>
+            <artifactId>plain-credentials</artifactId>
+            <version>1.5</version>
+            <type>jar</type>
+        </dependency>
     </dependencies>
 </project>