Fix kserve version is not updated properly by python-release.sh

[sivanantha321]

What this PR does / why we need it:
Fixes kserve version is not updated properly by python-release.sh. The script traverses the python directory and updates the package version. Some directories are traversed before kserve directory. So those directories traversed before kserve uses the stale version of kserve instead of the new one which leads to inconsistent kserve package version in the lock files.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
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Type of changes
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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

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NONE

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[spolti]

/lgtm

[yuzisun]

/approve

[oss-prow-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: sivanantha321, spolti, yuzisun

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