[BUG]: Images not really optimized

[mgifford]

Expected behavior
I would expect that we'd be compressing our images and trying to upload them at an appropriate size.

I would think running images through https://tinypng.com/ would be a very good habit.

Not as good as using WebP or AVIF, but easier.

Describe the bug

From this quick review, we can drop significant Kb's just be optimizing the images:
https://pagespeed.web.dev/report?url=https%3A%2F%2Fcivicactions.com%2F

URL	Resource size	Potential savings
Capitol building to represent government services that build public trust	/static/homepage-hero-fdad1db….png(civicactions.com)	518.3 KiB
div.cases > div.press-release-teaser > a > img	/static/blogpostimage-135ff83….png(civicactions.com)	148.0 KiB
div.cases > div.press-release-teaser > a > img	/static/case-study-teaser-img-4-fd5a69a….png(civicactions.com)	46.4 KiB

[iris-i]

Jira ticket: https://civicactions-home.atlassian.net/browse/HOMER20-564