Avoid that cis of different pg version cancel each other

trigger build is not dynamic since it is not available as buildin substitution
https://cloud.google.com/cloud-build/docs/configuring-builds/substitute-variable-values

script/ci/cloudbuild-pg11.yaml

@@ -5,7 +5,7 @@ steps:
   entrypoint: /bin/bash
   args:
   - '-c'
-  - 'gcloud builds list --ongoing --filter="substitutions.BRANCH_NAME=${BRANCH_NAME} AND substitutions.REPO_NAME=cartodb AND id!=${BUILD_ID}" --format="get(ID)" > jobs_to_cancel'
+  - 'gcloud builds list --ongoing --filter="buildTriggerId=7c2750ed-7d87-4d94-9f60-de53b2e64c61 AND substitutions.BRANCH_NAME=${BRANCH_NAME} AND id!=${BUILD_ID}" --format="get(ID)" > jobs_to_cancel'
 
 - name: gcr.io/cloud-builders/gcloud
   entrypoint: /bin/bash

script/ci/cloudbuild-pg12.yaml

@@ -5,7 +5,7 @@ steps:
   entrypoint: /bin/bash
   args:
   - '-c'
-  - 'gcloud builds list --ongoing --filter="substitutions.BRANCH_NAME=${BRANCH_NAME} AND substitutions.REPO_NAME=cartodb AND id!=${BUILD_ID}" --format="get(ID)" > jobs_to_cancel'
+  - 'gcloud builds list --ongoing --filter="buildTriggerId=51a5fed6-3b1c-4b53-aa4c-9855ccb3f510 AND substitutions.BRANCH_NAME=${BRANCH_NAME} AND id!=${BUILD_ID}" --format="get(ID)" > jobs_to_cancel'
 
 - name: gcr.io/cloud-builders/gcloud
   entrypoint: /bin/bash