I am using cloud build to trigger the releases of my cloud functions. I am using many substitutions values in the build trigger that will be passed as a user substitutions while triggering the build.
I want to write a bash script where I want to update a single field of substitutions values using gcloud beta triggers run command. Example, a variable _PYTHON_IMAGE_VERSION was provided in substitutions is 1.8.0
Now I want to update it to 1.8.1, so instead going to the trigger, can I use bash command to update my substitutions values ?