fix(progress-stepper): updated upcoming color to meet contrast

[saiponnada]

Fixes #2494

• This PR contains CSS changes
• This PR does not contain CSS changes

Description

• Updated the icon color to --color-stroke-default from --color-background-disabled in icons.svg file for icon-stepper-upcoming-24 to meet contrast.

Screenshots

Before

After

Checklist

• I verify the build is in a non-broken state
• I verify all changes are within scope of the linked issue

• I regenerated all CSS files under dist folder
• I tested the UI in all supported browsers
• I did a visual regression check of the components impacted by doing a Percy build and approved the build
• I tested the UI in dark mode and RTL mode
• I added/updated/removed Storybook coverage as appropriate

[changeset-bot]

🦋 Changeset detected

Latest commit: 39cff68

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@ebay/skin	Minor

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[agliga]

Need to change stepper upcoming icon as well