Update version in plugin.xml closes #56 (#57)

Author: viktoriia-fomina

utbot-intellij/src/main/resources/META-INF/plugin.xml

@@ -6,7 +6,7 @@
     <vendor>utbot.org</vendor>
 
     <description>UnitTestBot plugin for IntelliJ IDEA for Java</description>
-    <version>1.0.0-SNAPSHOT</version>
+    <version>2022.5-alpha</version>
     <depends>com.intellij.modules.platform</depends>
     <depends>com.intellij.modules.java</depends>
     <depends>org.jetbrains.kotlin</depends>
@@ -41,4 +41,4 @@
         ]]>
     </description>
 
-</idea-plugin>
+</idea-plugin>