chore: open 3.1.2-SNAPSHOT development cycle

Bump pom.xml and application.yaml MCP server version to 3.1.2-SNAPSHOT.
server.json and build-script fallback versions stay at 3.1.1 (last released tag).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: arvindand

pom.xml

@@ -11,7 +11,7 @@
     </parent>
     <groupId>com.arvindand.mcp</groupId>
     <artifactId>maven-tools-mcp</artifactId>
-    <version>3.1.1</version>
+    <version>3.1.2-SNAPSHOT</version>
     <name>maven-tools-mcp</name>
     <description>Maven Tools MCP server with universal JVM dependency intelligence. Provides comprehensive dependency analysis for any build tool (Maven, Gradle, SBT, Mill) using Maven Central Repository. Works with Claude Desktop, GitHub Copilot, and other MCP clients.</description>
     <url>https://github.com/arvindand/maven-tools-mcp</url>

src/main/resources/application.yaml

@@ -11,7 +11,7 @@ spring:
     mcp:
       server:
         name: maven-tools-mcp
-        version: 3.1.1
+        version: 3.1.2-SNAPSHOT
         type: SYNC                        # SYNC server with SYNC client avoids "Failed to enqueue message" error (MCP SDK issue #686)
         instructions: "Universal JVM dependency intelligence server for any build tool using Maven Central Repository. Provides comprehensive dependency analysis, latest version lookup, stability filtering, bulk operations, and upgrade recommendations with intelligent caching support. Works with Maven, Gradle, SBT, Mill, and any JVM build tool."
       client: