[SNC-367] update cpa

[davidmdm]

Checklist

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• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have checked for similar issues and haven't found anything relevant.
• This is not a security issue (which should be reported here: https://circleci.com/security/)
• I have read Contribution Guidelines.

Internal Checklist

• I am requesting a review from my own team as well as the owning team
• I have a plan in place for the monitoring of the changes that I am making (this can include new monitors, logs to be aware of, etc...)

Changes

Updated modules and target CircleCI-Public/circle-policy-agent

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• Put itemized changes here, preferably in imperative mood, i.e. "Add
  functionA to fileB"

Rationale

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This change pulls in the latest Circle-Policy-Agent version with fixes to its builtin helper functionality for Circle Policies