refactor(core): change thumbnail prop to image in BlogPostCard

[jorgemoya]

What/Why?

Generic name.

Testing

Works the same.

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: a9329619383f2e2e28271f1f1bfa4c3917468a38

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

This PR includes changesets to release 1 package

| Name | Type | | -------------------------- | ----- | | @bigcommerce/catalyst-core | Patch |

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

[vercel[bot]]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
catalyst-latest	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 5, 2024 4:09pm

6 Skipped Deployments

| Name | Status | Preview | Comments | Updated (UTC) | | :--- | :----- | :------ | :------- | :------ | | **catalyst** | ⬜️ Ignored ([Inspect](https://vercel.com/bigcommerce-platform/catalyst/64HLjwhKRoBhkm64V7p9nARRQ1LQ)) | | | Aug 5, 2024 4:09pm | | **catalyst-1millionproducts-store** | ⬜️ Ignored ([Inspect](https://vercel.com/bigcommerce-platform/catalyst-1millionproducts-store/6Sa9sR7P7TmNv5YbacH7eSvDSM5X)) | | | Aug 5, 2024 4:09pm | | **catalyst-au** | ⬜️ Ignored ([Inspect](https://vercel.com/bigcommerce-platform/catalyst-au/C8yFRH1eoZiirf2dXdNuNEjxCpaZ)) | | | Aug 5, 2024 4:09pm | | **catalyst-test-store** | ⬜️ Ignored ([Inspect](https://vercel.com/bigcommerce-platform/catalyst-test-store/8gJwwRsyWZByKC9xdS9uHu33nsGy)) | | | Aug 5, 2024 4:09pm | | **catalyst-uk** | ⬜️ Ignored ([Inspect](https://vercel.com/bigcommerce-platform/catalyst-uk/22BPkSbifuLGMaHwi9UbwkU7JX7X)) | | | Aug 5, 2024 4:09pm | | **catalyst-unstable** | ⬜️ Ignored ([Inspect](https://vercel.com/bigcommerce-platform/catalyst-unstable/DKkikgEMu6RxnVtpWDFcRdsAZHyi)) | | | Aug 5, 2024 4:09pm |

[github-actions[bot]]

⚡️🏠 Lighthouse report

Lighthouse ran against https://catalyst-latest-kqvok5o2c-bigcommerce-platform.vercel.app

🖥️ Desktop

We ran Lighthouse against the changes on a desktop and produced this report. Here's the summary:

Category	Score
🟠 Performance	85
🟢 Accessibility	100
🟢 Best practices	96
🟠 SEO	82

📱 Mobile

We ran Lighthouse against the changes on a mobile and produced this report. Here's the summary:

Category	Score
🟢 Performance	100
🟢 Accessibility	100
🟢 Best practices	96
🟠 SEO	85