Sync eng/common directory with azure-sdk-tools for PR 9901 (Azure#48401)

* bump proxy version to 1.0.0-dev.20250221.1

* bump the location in .net code as well

---------

Co-authored-by: Scott Beddall <[email protected]>

Author: azure-sdk

eng/Packages.Data.props

@@ -422,7 +422,7 @@
   </ItemGroup>
 
   <PropertyGroup>
-    <TestProxyVersion>1.0.0-dev.20241213.1</TestProxyVersion>
+    <TestProxyVersion>1.0.0-dev.20250221.1</TestProxyVersion>
   </PropertyGroup>
 
 </Project>

eng/common/testproxy/target_version.txt

@@ -1 +1 @@
-1.0.0-dev.20241213.1
+1.0.0-dev.20250221.1