[Bug] support download old version of flytectl by install.sh

[0yukali0]

Tracking issue

Related to #6657

Why are the changes needed?

check when the old version of flytectl may not be listed in the response from api.github.com.

What changes were proposed in this pull request?

1. Check https://api.github.com/repos/${OWNER}/${REPO}/releases/tags/flytectl/${TAG}
2. download if the url is work

How was this patch tested?

bash ./install.sh v0.8.19 # download v0.8.19
./bin/flytectl version
bash ./install.sh # download latest one
./bin/flytectl version

Labels

• fixed

This is important to improve the readability of release notes.

Setup process

Screenshots

Check all the applicable boxes

• I updated the documentation accordingly.
• All new and existing tests passed.
• All commits are signed-off.

Related PRs

Docs link

Summary by Bito

This pull request enhances the installation script for flytectl by adding checks for downloading older versions not listed in the GitHub API response. It introduces a new URL check to ensure specified versions can be retrieved, improving the robustness and user experience of version management.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 58.56%. Comparing base (996504d) to head (23570d9).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6668      +/-   ##
==========================================
+ Coverage   57.88%   58.56%   +0.68%     
==========================================
  Files         770      929     +159     
  Lines       63679    70875    +7196     
==========================================
+ Hits        36858    41511    +4653     
- Misses      23972    26211    +2239     
- Partials     2849     3153     +304     

Flag	Coverage Δ
unittests-datacatalog	59.03% <ø> (ø)
unittests-flyteadmin	56.13% <ø> (ø)
unittests-flytecopilot	40.87% <ø> (ø)
unittests-flytectl	64.64% <ø> (?)
unittests-flyteidl	76.12% <ø> (ø)
unittests-flyteplugins	61.00% <ø> (ø)
unittests-flytepropeller	55.06% <ø> (ø)
unittests-flytestdlib	63.05% <ø> (+0.01%)	⬆️

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