Update JavaSDK BOM version (modelcontextprotocol#146)

Signed-off-by: Christian Tzolov <[email protected]>

Author: tzolov

sdk/java/mcp-overview.mdx

@@ -129,7 +129,7 @@ Add the BOM to your project:
         <dependency>
             <groupId>io.modelcontextprotocol.sdk</groupId>
             <artifactId>mcp-bom</artifactId>
-            <version>0.7.0-SNAPSHOT</version>
+            <version>0.7.0</version>
             <type>pom</type>
             <scope>import</scope>
         </dependency>
@@ -141,7 +141,7 @@ Add the BOM to your project:
   <Tab title="Gradle">
 ```groovy
 dependencies {
-  implementation platform("io.modelcontextprotocol.sdk:mcp-bom:0.7.0-SNAPSHOT")
+  implementation platform("io.modelcontextprotocol.sdk:mcp-bom:0.7.0")
   //...
 }
 ```