fix(frontend): upgrade image + remove deprecated API_SPEC_URL env

- Upgrade frontend image to latest build (sha256:693dd826...)
- Comment out NEXT_PUBLIC_API_SPEC_URL (deprecated in new image)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: JOY

docker-compose/docker-compose-beta.yml

@@ -59,7 +59,7 @@ services:
     depends_on:
       backend:
         condition: service_healthy
-    image: metados/blockscout-frontend@sha256:3554f66094aaddc235bae3800a6766fb6c0c1826a0a527eeceba9133509b78df
+    image: metados/blockscout-frontend@sha256:693dd82611787285ffd27c14fadefd2f7521b81bee5dc20abdfffe3637584943
     pull_policy: always
     restart: always
     environment:

docker-compose/docker-compose-mainnet.yml

@@ -91,7 +91,7 @@ services:
     depends_on:
       backend:
         condition: service_healthy
-    image: metados/blockscout-frontend@sha256:3554f66094aaddc235bae3800a6766fb6c0c1826a0a527eeceba9133509b78df
+    image: metados/blockscout-frontend@sha256:693dd82611787285ffd27c14fadefd2f7521b81bee5dc20abdfffe3637584943
     pull_policy: always
     restart: always
     container_name: frontend

docker-compose/docker-compose-testnet.yml

@@ -104,7 +104,7 @@ services:
   frontend:
     depends_on:
       - backend
-    image: metados/blockscout-frontend@sha256:3554f66094aaddc235bae3800a6766fb6c0c1826a0a527eeceba9133509b78df
+    image: metados/blockscout-frontend@sha256:693dd82611787285ffd27c14fadefd2f7521b81bee5dc20abdfffe3637584943
     pull_policy: always
     platform: linux/amd64
     restart: always

docker-compose/envs/common-frontend.env

@@ -40,7 +40,7 @@ NEXT_PUBLIC_API_PROTOCOL=https
 NEXT_PUBLIC_API_HOST=doscan.io
 NEXT_PUBLIC_API_BASE_PATH=/
 NEXT_PUBLIC_API_WEBSOCKET_PROTOCOL=wss
-NEXT_PUBLIC_API_SPEC_URL=https://raw.githubusercontent.com/blockscout/blockscout-api-v2-swagger/main/swagger.yaml
+# NEXT_PUBLIC_API_SPEC_URL=https://raw.githubusercontent.com/blockscout/blockscout-api-v2-swagger/main/swagger.yaml  # deprecated in latest frontend image
 # NEXT_PUBLIC_API_TIMEOUT=10000            # API request timeout in ms (default: 10000)
 # NEXT_PUBLIC_SAFE_TX_SERVICE_URL=         # Safe (Gnosis Safe) transaction service API