Update Label component font weight from bold to medium

[Jainex17]

Explanation

• Fixes Update Label component font weight #19623

Change Made

1. Updated the Label component's font weight from bold to medium in the label.js file.
2. Update Snapshots.

Screenshots

Before

before.mov

After

after.mov

Pre-merge author checklist

• I've clearly explained:
  • What problem this PR is solving
  • How this problem was solved
  • How reviewers can test my changes
• Sufficient automated test coverage has been added

Pre-merge reviewer checklist

• Manual testing (e.g. pull and build branch, run in browser, test code being changed)
• PR is linked to the appropriate GitHub issue
• IF this PR fixes a bug in the release milestone, add this PR to the release milestone

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[georgewrmarshall]

Hey @Jainex17, thanks for your contribution could you please add some before and after screenshots of the Label component in storybook so others can see the visual changes. I also replaced some deprecated instances of consts. Thanks

[codecov]

Codecov Report

Merging #19731 (9c31198) into develop (ed06926) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop   #19731      +/-   ##
===========================================
- Coverage    69.83%   69.82%   -0.01%     
===========================================
  Files          979      979              
  Lines        36905    36905              
  Branches      9909     9909              
===========================================
- Hits         25769    25767       -2     
- Misses       11136    11138       +2     

Impacted Files	Coverage Δ
ui/components/component-library/label/label.js	100.00% <ø> (ø)

... and 2 files with indirect coverage changes

[georgewrmarshall]

Updated PR with screencast of before/after. LGTM. Thanks for your contribution

[NidhiKJha]

LGTM