chore(assets): update context/integration logos

[natemoo-re]

• Adds proper dark mode support to context/integration logos. Closes PD-10.
• Removes a few unused logos (Dell, Fly, Sprintly, Zendesk)
• Simplifies device frames for Android / iOS
• Updates a few logos that have updated branding (Android, Auth0, Azure, Deno, Chrome, Okta, Rippling)

[getsantry]

This issue has gone three weeks without activity. In another week, I will close it.

But! If you comment or otherwise update it, I will reset the clock, and if you remove the label Waiting for: Community, I will leave it alone ... forever!

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"A weed is but an unloved flower." ― Ella Wheeler Wilcox 🥀