Switch custom runners from mariner-2.0 to azure-linux-3 (#108)

Author: jakebailey

build/benchmark.yml

@@ -303,7 +303,7 @@ jobs:
     pool:
       name: TypeScript-1ES-Deploys
       demands:
-        - ImageOverride -equals mariner-2.0
+        - ImageOverride -equals azure-linux-3
     workspace:
       clean: all # Always start with a clean slate.
 
@@ -462,7 +462,7 @@ jobs:
     pool:
       name: TypeScript-1ES-Deploys
       demands:
-        - ImageOverride -equals mariner-2.0
+        - ImageOverride -equals azure-linux-3
     workspace:
       clean: all # Always start with a clean slate.