update kuperator charts v0.7.3

[ColdsteelRail]

1. Does this PR affect any open issues?(Y/N) and add issue references (e.g. "fix #123", "re #123".):

• N
• Y

2. What is the scope of this PR (e.g. component or file name):

3. Provide a description of the PR(e.g. more details, effects, motivations or doc link):

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Other

4. Are there any breaking changes?(Y/N) and describe the breaking changes(e.g. more details, motivations or doc link):

• N
• Y

5. Are there test cases for these changes?(Y/N) select and add more details, references or doc links:

• Unit test
• Integration test
• Benchmark (add benchmark stats below)
• Manual test (add detailed scripts or steps below)
• Other

6. Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[Copilot]

Pull request overview

This PR updates the Helm chart defaults for Kuperator to release version 0.7.3.

Changes:

• Bumps the chart version and appVersion to 0.7.3.
• Updates the default Kuperator image tag to v0.7.3.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
charts/Chart.yaml	Updates Helm chart metadata to version 0.7.3.
charts/values.yaml	Updates the default container image tag to v0.7.3.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 47.27%. Comparing base (e40b0a3) to head (171ed1b).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #361      +/-   ##
==========================================
- Coverage   47.35%   47.27%   -0.09%     
==========================================
  Files         122      122              
  Lines        7491     7491              
==========================================
- Hits         3547     3541       -6     
- Misses       3624     3630       +6     
  Partials      320      320              

Flag	Coverage Δ
unittests	47.27% <ø> (-0.09%)	⬇️

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