chore(env): update MODEL_BACKEND_VERSION (#1341)

Because
- The version of the model-backend service is not updated in the
instill-core repository.

This commit
- updates the `MODEL_BACKEND_VERSION` in the `.env` file to `0.38.0`.
- updates the `modelBackend.image.tag` in the helm chart values.yaml
file to `0.38.0`.

## Changes in model-backend
- chore(main): release 0.38.0 (instill-ai/model-backend#768)
- chore: release v0.38.0
- ci(workflows): update dockerhub username and password
(instill-ai/model-backend#767)

Co-authored-by: donch1989 <[email protected]>

Author: droplet-bot

.env

@@ -81,7 +81,7 @@ ARTIFACT_BACKEND_HOST_PUBLICPORT=8082
 
 # model-backend
 MODEL_BACKEND_IMAGE=instill/model-backend
-MODEL_BACKEND_VERSION=4da11d1
+MODEL_BACKEND_VERSION=0.38.0
 MODEL_BACKEND_HOST=model-backend
 MODEL_BACKEND_PRIVATEPORT=3083
 MODEL_BACKEND_PUBLICPORT=8083

charts/core/values.yaml

@@ -536,7 +536,7 @@ modelBackend:
   # -- The image of model-backend
   image:
     repository: instill/model-backend
-    tag: 4da11d1
+    tag: 0.38.0
     pullPolicy: IfNotPresent
   # -- Annotation for deployment
   annotations: {}