refactor(general): avoid async method inside forEach

[Hweinstock]

Problem

usage of an async function inside a forEach, which is almost always not desired. forEach will not await the results leading to race conditions and inconsistent orderings.

Solution

• add lint rule
• migrate existing cases

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• Treat all work as PUBLIC. Private feature/x branches will not be squash-merged at release time.
• Your code changes must meet the guidelines in CONTRIBUTING.md.

License: I confirm that my contribution is made under the terms of the Apache 2.0 license.

[github-actions]

• This pull request modifies code in src/* but no tests were added/updated.
  • Confirm whether tests should be added or ensure the PR description explains why tests are not required.