chore(build) Bump alpine version from 3.14.8 to 3.18.4

[emiran-orange]

Why is this PR required? What issue does it fix?:

Current Alpine version contains vulnerabilities.
Fixes #262

What this PR does?:

Updates Alpine version from 3.14.8 to 3.18.4

Does this PR require any upgrade changes?:
No

If the changes in this PR are manually verified, list down the scenarios covered::
N/A

Any additional information for your reviewer? :
N/A

Checklist:

• Fixes Alpine version used in images requires update #262
• PR Title follows the convention of <type>(<scope>): <subject>
• Has the change log section been updated?
• Commit has unit tests
• Commit has integration tests
• (Optional) Are upgrade changes included in this PR? If not, mention the issue/PR to track:
• (Optional) If documentation changes are required, which issue on https://github.com/openebs/openebs-docs is used to track them