bump: tag and release ORAS CLI v1.3.4

[TerryHowe]

Release v1.3.4

This PR bumps the version to v1.3.4 for the upcoming release.

Checklist

• Version updated in internal/version/version.go
• CI checks pass
• Vote called in the ORAS Slack channel
• Super-majority of approval from ORAS maintainers

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.66%. Comparing base (94fa1d8) to head (d6ed51a).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2136      +/-   ##
==========================================
+ Coverage   87.62%   87.66%   +0.03%     
==========================================
  Files         139      139              
  Lines        5681     5681              
==========================================
+ Hits         4978     4980       +2     
+ Misses        420      418       -2     
  Partials      283      283              

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[TerryHowe]

Post merge action scripts/release.sh tag 1.3.4 <merged-sha>

[sabre1041]

LGTM

[sajayantony]

LGTM