qa-tests: change RPC Integration Latest test trigger (#19563)

This test requires that, when starting Erigon from a synced DB, it reach
the tip within a few minutes.
This does not seem to be true. So, temporarily, we change the test
trigger:
- run nightly in main, 
- run on every push in release

Author: mriccobene

.github/workflows/qa-rpc-integration-tests-latest.yml

@@ -8,18 +8,11 @@ on:
         type: boolean
         required: false
         default: false
+  schedule:
+    - cron: '0 0 * * *'  # Run nightly at 00:00 AM UTC
   push:
     branches:
-      - main
-  pull_request:
-    branches:
-      - main
-    types:
-      - opened
-      - reopened
-      - synchronize
-      - ready_for_review
-
+      - 'release/3.*'
 
 jobs:
   mainnet-rpc-integ-tests-latest:
@@ -35,7 +28,7 @@ jobs:
     env:
       ERIGON_TESTBED_DATA_DIR: /opt/erigon-testbed/datadir
       ERIGON_QA_PATH: /home/qarunner/erigon-qa
-      TOTAL_TIME_SECONDS: 900 # 15 minutes
+      TOTAL_TIME_SECONDS: 1800 # 30 minutes
       REFERENCE_SYSTEM_HOST_ADDRESS: 157.180.55.78:8545
       ERIGON_ASSERT: true
       RPC_PAST_TEST_DIR: /opt/rpc-past-tests