Bump com.github.johnrengelman.shadow from 8.1.0 to 8.1.1 in /examples/extension (#8088)

Bumps com.github.johnrengelman.shadow from 8.1.0 to 8.1.1.


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examples/extension/build.gradle

@@ -10,7 +10,7 @@ plugins {
   into a single jar.
   See https://imperceptiblethoughts.com/shadow/ for more details about Shadow plugin.
    */
-  id "com.github.johnrengelman.shadow" version "8.1.0"
+  id "com.github.johnrengelman.shadow" version "8.1.1"
   id "com.diffplug.spotless" version "6.17.0"
 
   id "io.opentelemetry.instrumentation.muzzle-generation" version "1.25.0-alpha-SNAPSHOT"