ci(workflow): update the dockerhub credentials in ga workflow

Author: Sarthak-instill

.github/workflows/images.yml

@@ -24,7 +24,7 @@ jobs:
       - name: Login to DockerHub
         uses: docker/login-action@v3
         with:
-          username: dropletbot
+          username:  drop@instill-ai.com
           password: ${{ secrets.botDockerHubPassword }}
 
       - name: Build and push (latest)

.github/workflows/integration-test.yml

@@ -72,7 +72,7 @@ jobs:
       - name: Login to Docker Hub
         uses: docker/login-action@v3
         with:
-          username: drop@instill.tech
+          username:  drop@instill-ai.com
           password: ${{ secrets.BOTDOCKERHUBPASSWORD }}
 
       - name: Set up Docker Buildx