Use yarn version 3.x as berry is taking version 4.x now

.github/workflows/run-javascript-tests.yml

@@ -26,7 +26,7 @@ jobs:
 
       - name: Upgrade yarn
         run: |
-          yarn set version berry
+          yarn set version 3.x
 
       - name: Install Node modules
         run: |

Dockerfile

@@ -46,7 +46,7 @@ WORKDIR /pgadmin4/web
 
 # Build the JS vendor code in the app-builder, and then remove the vendor source.
 RUN export CPPFLAGS="-DPNG_ARM_NEON_OPT=0" && \
-    yarn set version berry && \
+    yarn set version 3.x && \
     yarn install && \
     yarn run bundle && \
     rm -rf node_modules \