fix: replace deprecated io/ioutil package

[nnnkkk7]

Related Issue

• Info about Issue or bug

Closes: #1587

Describe the changes you've made

A clear and concise description of what you have done to successfully close your assigned issue. Any new files? or anything you feel to let us know!

I replaced deprecated io/ioutil package with io and os package.
https://pkg.go.dev/io/ioutil

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, local variables)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Please let us know if any test cases are added

Please describe the tests(if any). Provide instructions how its affecting the coverage.

Describe if there is any unusual behaviour of your code(Write NA if there isn't)

A clear and concise description of it.

Checklist:

• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.

Screenshots (if any)

Original	Updated
original screenshot	updated screenshot

[github-actions]

CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅

[github-actions]

Thank you and congratulations 🎉 for opening your very first pull request in keploy

[nnnkkk7]

I have read the CLA Document and I hereby sign the CLA

[nnnkkk7]

recheck

[shivamsouravjha]

Hey @nnnkkk7 can you open an issue for this PR and link the PR to issue?

Also take the pull as there are merge conflicts rest LGTM

[shivamsouravjha]

Resolve the merge conflict,rest LGTM

[nnnkkk7]

@shivamsouravjha
thank you!
I created this issue!
#1587

[shivamsouravjha]

LGTM