chore(main): release 0.2.1-SNAPSHOT (#43)

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

Author: release-please[bot]

pom.xml

@@ -26,7 +26,7 @@
 
     <groupId>com.google.cloud.mcp</groupId>
     <artifactId>mcp-toolbox-sdk-java</artifactId>
-    <version>0.2.0</version><!-- {x-version-update:mcp-toolbox-sdk-java:current} -->
+    <version>0.2.1-SNAPSHOT</version><!-- {x-version-update:mcp-toolbox-sdk-java:current} -->
     <name>MCP Toolbox SDK for Java</name>
     <description>Java client library for the Model Context Protocol (MCP) Toolbox.</description>
     <url>https://github.com/googleapis/mcp-toolbox-sdk-java</url>

versions.txt

@@ -1,4 +1,4 @@
 # Format:
 # module:released-version:current-version
 
-mcp-toolbox-sdk-java:0.2.0:0.2.0
+mcp-toolbox-sdk-java:0.2.0:0.2.1-SNAPSHOT