[maven-release-plugin][skip ci] prepare release v1.21

Rest-assured to 4.1.2 (newest version)
httpclient-osgi 4.5.3 (dependency of rest-assured)

packaging/tests/tas-restapi/pom.xml

@@ -4,7 +4,7 @@
     <groupId>org.alfresco.tas</groupId>
     <artifactId>restapi</artifactId>
     <name>alfresco-tas-restapi</name>
-    <version>1.19</version>
+    <version>1.21</version>
     <parent>
         <groupId>org.alfresco</groupId>
         <artifactId>alfresco-super-pom</artifactId>
@@ -28,9 +28,9 @@
         <suiteXmlFile>src/main/resources/shared-resources/testCount.xml</suiteXmlFile>
         <maven.build.sourceVersion>11</maven.build.sourceVersion>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <tas.utility.version>3.0.15</tas.utility.version>
+        <tas.utility.version>3.0.16</tas.utility.version>
         <rest-assured.version>3.3.0</rest-assured.version>
-        <httpclient-osgi-version>4.5.10</httpclient-osgi-version>
+        <httpclient-osgi-version>4.5.3</httpclient-osgi-version>
         <json-path.version>3.3.0</json-path.version>
         <xml-path.version>3.3.0</xml-path.version>
         <json-schema-validator.version>3.3.0</json-schema-validator.version>
@@ -48,7 +48,7 @@
         <connection>scm:git:https://github.com/Alfresco/alfresco-tas-restapi.git</connection>
         <developerConnection>scm:git:https://github.com/Alfresco/alfresco-tas-restapi.git</developerConnection>
         <url>https://github.com/Alfresco/alfresco-tas-restapi</url>
-        <tag>v1.19</tag>
+        <tag>v1.21</tag>
     </scm>
 
     <issueManagement>