chore: bump versions to remove alpha

gravitee-gateway-api to 2.0.0
gravitee-node to 2.0.1
gravitee-common to 2.0.0
gravitee-expression-language to 2.0.0
gravitee-apim-gateway-tests-sdk to 3.20.0-alpha.1-SNAPSHOT

pom.xml

@@ -34,25 +34,23 @@
     </parent>
 
     <properties>
+        <gravitee-apim-gateway-tests-sdk.version>3.20.0-alpha.2-SNAPSHOT</gravitee-apim-gateway-tests-sdk.version>
         <gravitee-bom.version>2.7</gravitee-bom.version>
-        <gravitee-gateway-api.version>2.0.0-alpha.1</gravitee-gateway-api.version>
+        <gravitee-connector-api.version>1.1.0</gravitee-connector-api.version>
+        <gravitee-expression-language.version>2.0.0</gravitee-expression-language.version>
+        <gravitee-gateway-api.version>2.0.0</gravitee-gateway-api.version>
         <gravitee-policy-api.version>1.11.0</gravitee-policy-api.version>
-        <json-schema-generator-maven-plugin.version>1.1.0</json-schema-generator-maven-plugin.version>
-        <json-schema-generator-maven-plugin.outputDirectory>${project.build.directory}/schemas
-        </json-schema-generator-maven-plugin.outputDirectory>
+        <gravitee-node.version>2.0.1</gravitee-node.version>
+        <gravitee-common.version>2.0.0</gravitee-common.version>
+        <gravitee-plugin.version>1.24.1</gravitee-plugin.version>
         <junit-jupiter.version>5.8.2</junit-jupiter.version>
         <mockito-junit-jupiter.version>4.0.0</mockito-junit-jupiter.version>
 
+        <json-schema-generator-maven-plugin.version>1.1.0</json-schema-generator-maven-plugin.version>
+        <json-schema-generator-maven-plugin.outputDirectory>${project.build.directory}/schemas</json-schema-generator-maven-plugin.outputDirectory>
         <maven-assembly-plugin.version>2.6</maven-assembly-plugin.version>
         <!-- Property used by the publication job in CI-->
         <publish-folder-path>graviteeio-apim/plugins/policies</publish-folder-path>
-        <gravitee-apim-gateway-tests-sdk.version>3.20.0-SNAPSHOT</gravitee-apim-gateway-tests-sdk.version>
-        <gravitee-node-api.version>1.21.0</gravitee-node-api.version>
-        <gravitee-node.version>2.0.0-alpha.3</gravitee-node.version>
-        <gravitee-common.version>2.0.0-alpha.1</gravitee-common.version>
-        <gravitee-expression-language.version>2.0.0-alpha.2</gravitee-expression-language.version>
-        <gravitee-plugin.version>1.24.1</gravitee-plugin.version>
-        <gravitee-connector-api.version>1.1.0</gravitee-connector-api.version>
     </properties>
 
     <dependencyManagement>