AF-1932 Release dependency_validator 1.2.3

[rmconsole-readonly-wk]

Pull Requests included in release:

• update build
• AF-2509 Dart2

Requested by: @evanweible-wf

Diff Between Last Tag and Proposed Release: https://github.com/Workiva/dependency_validator/compare/1.2.2...Workiva:release_1.2.3 Diff Between Last Tag and New Tag: https://github.com/Workiva/dependency_validator/compare/1.2.2...1.2.3

The logs for the request that created this PR can be found here

[aviary2-wf]

Security Insights

No security relevant content was detected by automated scans.

Action Items

• Review PR for security impact; comment "security review required" if needed or unsure

• Verify aviary.yaml coverage of security relevant code

  Questions or Comments? Reach out on HipChat: InfoSec Forum.

[evanweible-wf]

QA +1

• [x] Dev +1's only needed for Release ticket

@Workiva/release-management-pp