Bump @polar-sh/sdk from 0.20.2 to 0.42.5

Bumps [@polar-sh/sdk](https://github.com/polarsource/polar-js) from 0.20.2 to 0.42.5.
- [Release notes](https://github.com/polarsource/polar-js/releases)
- [Changelog](https://github.com/polarsource/polar-js/blob/main/RELEASES.md)
- [Commits](polarsource/polar-js@v0.20.2...v0.42.5)

---
updated-dependencies:
- dependency-name: "@polar-sh/sdk"
  dependency-version: 0.42.5
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

landing/package.json

@@ -13,7 +13,7 @@
   "dependencies": {
     "@astrojs/mdx": "^4.3.13",
     "@astrojs/vercel": "^9.0.2",
-    "@polar-sh/sdk": "^0.20.2",
+    "@polar-sh/sdk": "^0.43.0",
     "astro": "^5.17.1",
     "shepherd.js": "workspace:*"
   },