github workflow: fix network-tests flow

.github/workflows/network-tests.yml

@@ -18,7 +18,7 @@ jobs:
       run: |
         yarn install --frozen-lockfile
         yarn workspace @joystream/types build
-        yarn workspace @joystream/content-metadata-protobuf build:ts
+        yarn workspace @joystream/metadata-protobuf build
         yarn workspace network-tests checks --quiet
 
   network_build_osx:
@@ -37,5 +37,5 @@ jobs:
       run: |
         yarn install --frozen-lockfile --network-timeout 120000
         yarn workspace @joystream/types build
-        yarn workspace @joystream/content-metadata-protobuf build:ts
+        yarn workspace @joystream/metadata-protobuf build
         yarn workspace network-tests checks --quiet