Unpin wasi docker image in pipeline-with-resources.yml (#98357)

Author: akoeplinger

eng/pipelines/common/templates/pipeline-with-resources.yml

@@ -91,7 +91,7 @@ resources:
         ROOTFS_DIR: /crossrootfs/x64
 
     - container: wasi_wasm
-      image: mcr.microsoft.com/dotnet-buildtools/prereqs:cbl-mariner-2.0-webassembly-20240212214902-ca89d22
+      image: mcr.microsoft.com/dotnet-buildtools/prereqs:cbl-mariner-2.0-webassembly
       env:
         ROOTFS_DIR: /crossrootfs/x64