Update app insights agent version

Author: kamperiadis

azure-pipelines.yml

@@ -15,7 +15,7 @@ pr:
 jobs:
   - job: "Build_And_Test_Java_Library_Windows"
     variables:
-      ApplicationInsightAgentVersion: 3.4.16
+      ApplicationInsightAgentVersion: 3.5.1
 
     pool:
       name: '1ES-Hosted-AzFunc'