feat: Add security bootstrapper key for postgres db

[lindseysimple]

Resolves edgexfoundry/edgex-go#4836. Add the security bootstrapper key for postgres db.

If your build fails due to your commit message not passing the build checks, please review the guidelines here: https://github.com/edgexfoundry/go-mod-core-contracts/blob/main/.github/Contributing.md

PR Checklist

Please check if your PR fulfills the following requirements:

• [x] I am not introducing a breaking change (if you are, flag in conventional commit message with BREAKING CHANGE: describing the break)
• [x] I am not introducing a new dependency (add notes below if you are)
• [ ] I have added unit tests for the new feature or bug fix (if not, why?) - this change only involves adding a new constant
• [x] I have fully tested (add details below) this the new feature or bug fix (if not, why?)
• [ ] I have opened a PR for the related docs change (if not, why?) - this change only involves adding a new constant

Testing Instructions

New Dependency Instructions (If applicable)

[codecov-commenter]

:warning: Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 64.31%. Comparing base (ffa9c05) to head (5bc0bbc).

:exclamation: Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #910 +/- ## ======================================= Coverage 64.31% 64.31% ======================================= Files 94 94 Lines 3761 3761 ======================================= Hits 2419 2419 Misses 1117 1117 Partials 225 225 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.