Modifying script tag retrieval script for build infra

[WhitWaldo]

Description

Applying tweaks to the runtime tag retrieval script that determines which Dapr runtime versions to test against. It should use N-2 of stable versions. If any stable version exists in a version with an RC, it should ignore the RCs. Otherwise, only test against the latest patch for each of the minor versions (in other words it should always return either 3 or 4 versions)

Issue reference

We strive to have all PR being opened based on an issue, where the problem or feature have been discussed prior to implementation.

Please reference the issue this PR will close: #[issue number]

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• Code compiles correctly
• Created/updated tests
• Extended the documentation

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 65.42%. Comparing base (059e6bf) to head (95e24ca).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1810   +/-   ##
=======================================
  Coverage   65.42%   65.42%           
=======================================
  Files         296      296           
  Lines        8694     8694           
  Branches     1009     1009           
=======================================
  Hits         5688     5688           
  Misses       2761     2761           
  Partials      245      245           

Flag	Coverage Δ
net10.0	65.41% <ø> (ø)

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