PM-12764 update image assets

[dseverns-livefront]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-12764

📔 Objective

• update gif files for the new color scheme

📸 Screenshots

gifUpdate.webm

⏰ Reminders before review

• Contributor guidelines followed
• All formatters and local linters executed and passed
• Written new unit and / or integration tests where applicable
• Used internationalization (i18n) for all UI strings
• CI builds passed
• Communicated to DevOps any deployment requirements
• Updated any necessary documentation or informed the documentation team

🦮 Reviewer guidelines

• 👍 (:+1:) or similar for great changes
• 📝 (:memo:) or ℹ️ (:information_source:) for notes or general info
• ❓ (:question:) for questions
• 🤔 (:thinking:) or 💭 (:thought_balloon:) for more open inquiry that's not quite a confirmed issue and could potentially benefit from discussion
• 🎨 (:art:) for suggestions / improvements
• ❌ (:x:) or ⚠️ (:warning:) for more significant problems or concerns needing attention
• 🌱 (:seedling:) or ♻️ (:recycle:) for future improvements or indications of technical debt
• ⛏ (:pick:) for minor or nitpick changes

[dseverns-livefront]

Hold till after https://bitwarden.atlassian.net/browse/PM-12322 is merged

[github-actions[bot]]

Checkmarx One – Scan Summary & Details – e090f3f9-e6cb-49b3-8066-915cb44b1357

No New Or Fixed Issues Found

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 88.85%. Comparing base (aaa541d) to head (e6692b3). Report is 2 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #3982 +/- ## ======================================= Coverage 88.85% 88.85% ======================================= Files 425 425 Lines 35007 35007 Branches 5133 5133 ======================================= Hits 31105 31105 Misses 2108 2108 Partials 1794 1794 ```

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