chore: use Secrets SDK instead of keytar

[traeok]

What It Does

This PR replaces keytar with the Secrets SDK keyring module.

How to Test

Install v1 of the CLI from this PR, and then install the SCS plugin from this branch (npm run installPlugin). Reviewers should be able to execute a CLI command, e.g. zowe files list ds ... with a v1 profile that's already set up, and the CLI should be able to access the secured credentials.

Review Checklist I certify that I have:

• [x] tested my changes
• [x] added/updated automated tests
• [x] updated the changelog
• [x] followed the contribution guidelines

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codecov-commenter]

Codecov Report

Patch coverage is 100.00% of modified lines.

Files Changed	Coverage
src/credentials/KeytarCredentialManager.ts	100.00%

:loudspeaker: Thoughts on this report? Let us know!.

[github-actions[bot]]

Release succeeded for the master branch. :tada:

The following packages have been published:

• npm: @zowe/secure-credential-store-for-zowe-cli@4.1.12

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