Install necessary debs instead of entire artifact in azp (sonic-net#137)

Why I did it

sonic-gnmi pipeline breaks with error: "System.IO.IOException: No space left on device : '/home/vsts/agents/3.220.5/_diag/Worker_20230719-220457-utc.log'"

How I did it

Only install necessary bullseye debs instead of entire artifact

azure-pipelines.yml

@@ -79,7 +79,11 @@ stages:
         artifact: sonic-buildimage.vs
         runVersion: 'latestFromBranch'
         runBranch: 'refs/heads/master'
-      displayName: "Download sonic buildimage"
+        patterns: |
+            target/debs/bullseye/libyang*.deb
+            target/debs/bullseye/libnl*.deb
+            target/debs/bullseye/libhiredis*.deb
+      displayName: "Download bullseye debs"
 
     - script: |
         # PYTEST