feat: add fallback dialing support

[dovholuknf]

Should core-keeper require overriding the dialer this is where/how I think it makes sense.

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?)
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Codecov Report

Attention: Patch coverage is 9.09091% with 10 lines in your changes missing coverage. Please review.

Project coverage is 54.95%. Comparing base (5dc0b86) to head (9f0cc45).

Files	Patch %	Lines
bootstrap/secret/secure.go	0.00%	7 Missing :warning:
bootstrap/secret/insecure.go	0.00%	3 Missing :warning:

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #739 +/- ## ========================================== - Coverage 55.01% 54.95% -0.07% ========================================== Files 32 32 Lines 2710 2715 +5 ========================================== + Hits 1491 1492 +1 - Misses 1117 1121 +4 Partials 102 102 ```

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