Bump org.eclipse.milo:sdk-client from 0.6.11 to 0.6.12

Bumps org.eclipse.milo:sdk-client from 0.6.11 to 0.6.12.

---
updated-dependencies:
- dependency-name: org.eclipse.milo:sdk-client
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pom.xml

@@ -214,7 +214,7 @@
 		<dependency>
 			<groupId>org.eclipse.milo</groupId>
 			<artifactId>sdk-client</artifactId>
-			<version>0.6.11</version>
+			<version>0.6.12</version>
 		</dependency>
 
 		<!-- Eclipse Milo (for OPC-UA server) -->