bump: tag and release ORAS CLI v1.2.0

[qweeah]

What this PR does / why we need it:
This PR proposes to tag v1.2.0 based on dcef719, cut off a new release branch named release-1.2 and release. At least 3 approvals are needed from the 5 owners.

Below is a summary of change notes since v1.2.0-rc.1:

Other Changes

• Update dependencies
• Enhance documents
• Clean code

Detailed Commits

• bump: tag and release ORAS CLI v1.2.0-rc.1 by @qweeah in bump: tag and release ORAS CLI v1.2.0-rc.1 #1381
• fix: remove non-classic snap plugins by @qweeah in fix: remove non-classic snap plugins #1383
• fix: oras cp documentation by @TerryHowe in fix: oras cp documentation #1384
• build(deps): bump actions/checkout from 3 to 4 by @dependabot in build(deps): bump actions/checkout from 3 to 4 #1385
• refactor: Get rid of deprecated PrintStatus method by @TerryHowe in refactor: Get rid of deprecated PrintStatus method #1378
• build(deps): bump github.com/onsi/ginkgo/v2 from 2.17.3 to 2.18.0 in /test/e2e by @dependabot in build(deps): bump github.com/onsi/ginkgo/v2 from 2.17.3 to 2.18.0 in /test/e2e #1388
• build(deps): bump github.com/onsi/ginkgo/v2 from 2.18.0 to 2.19.0 in /test/e2e by @dependabot in build(deps): bump github.com/onsi/ginkgo/v2 from 2.18.0 to 2.19.0 in /test/e2e #1390
• chore: Remove deprecated PrintStatus method by @TerryHowe in chore: Remove deprecated PrintStatus method #1389
• doc: verify local files by @qweeah in doc: verify local files #1386
• fix: remove call to deprecated print by @TerryHowe in fix: remove call to deprecated print #1392

Full Changelog: v1.2.0-rc.1...v1.2.0

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.01%. Comparing base (9ff316c) to head (dcef719).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1393      +/-   ##
==========================================
- Coverage   85.07%   85.01%   -0.06%     
==========================================
  Files         107      107              
  Lines        3805     3805              
==========================================
- Hits         3237     3235       -2     
- Misses        339      341       +2     
  Partials      229      229              

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[TerryHowe]

/lgtm

[shizhMSFT]

LGTM