Updated kubectl version for the init image

[santhoshatdell]

Description

Fixed new Trivy scan vulnerability reported in the init image.
Updated kubectl from v1.25.6 to v1.25.7 for golang.org/x/net update.

GitHub Issues

List the GitHub issues impacted by this PR:

GitHub Issue #
dell/csm#583

Checklist:

• I have performed a self-review of my own code to ensure there are no formatting, vetting, linting, or security issues
• I have verified that new and existing unit tests pass locally with my changes
• I have not allowed coverage numbers to degenerate
• I have maintained at least 90% code coverage
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• I have maintained backward compatibility

How Has This Been Tested?

Performed sanity tests with the init image deployment and upgrade script (locally modified) to test different scenarios.
init container log.txt