chore(deps): update gcr.io/cloud-builders/docker docker digest to b95…

…40e0 (#733)

[![Mend Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| gcr.io/cloud-builders/docker | digest | `78f03ad` -> `b9540e0` |

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

This PR was generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View the [repository job log](https://developer.mend.io/github/ride-app/platform).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy40NDAuNyIsInVwZGF0ZWRJblZlciI6IjM3LjQ0MC43IiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6W119-->

api-gateway/cloudbuild.yaml

@@ -3,7 +3,7 @@ substitutions:
 
 steps:
   # Step 1: Build a Docker image
-  - name: gcr.io/cloud-builders/docker@sha256:78f03ad1b806cc4bd173248ae27786a7574c8d166b9cca2b91f68b858008459d
+  - name: gcr.io/cloud-builders/docker@sha256:b9540e02c9e9cdc2678eac674e98c294fbcc078085706dbe6a90d1be41d9f0fb
     args:
       - build
       - --build-arg=HOSTNAME=$_DOMAIN
@@ -15,7 +15,7 @@ steps:
       - ./api-gateway
 
   # Step 2: Push a Docker image
-  - name: gcr.io/cloud-builders/docker@sha256:78f03ad1b806cc4bd173248ae27786a7574c8d166b9cca2b91f68b858008459d
+  - name: gcr.io/cloud-builders/docker@sha256:b9540e02c9e9cdc2678eac674e98c294fbcc078085706dbe6a90d1be41d9f0fb
     args:
       - push
       - asia-south2-docker.pkg.dev/$PROJECT_ID/docker-registry/$_SERVICE_NAME:$COMMIT_SHA