chore(website): upgrade to astro 4

[TobiasKampmann]

Upgrade to astro 4

regress of our msw/node issue

[JonasKellerer]

The dev mode works for me if I set exclude: ['fsevents', 'msw/node', 'msw'], in astro.config.mjs
But I dont know why the other one fails. The logs give me the error that
`node:internal/modules/esm/resolve:844
throw new ERR_MODULE_NOT_FOUND(packageName, fileURLToPath(base), null);
^

Error [ERR_MODULE_NOT_FOUND]: Cannot find package 'cookie' imported from /app/dist/server/entry.mjs
at packageResolve (node:internal/modules/esm/resolve:844:9)
at moduleResolve (node:internal/modules/esm/resolve:901:20)
at defaultResolve (node:internal/modules/esm/resolve:1121:11)
at ModuleLoader.defaultResolve (node:internal/modules/esm/loader:396:12)
at ModuleLoader.resolve (node:internal/modules/esm/loader:365:25)
at ModuleLoader.getModuleJob (node:internal/modules/esm/loader:240:38)
at ModuleWrap. (node:internal/modules/esm/module_job:85:39)
at link (node:internal/modules/esm/module_job:84:36) {
code: 'ERR_MODULE_NOT_FOUND'
}
`
Something with the cookie import you added?

[JonasKellerer]

It seems that the dev modus does not work on main as well? I'll try my fix there and push it.

[TobiasKampmann]

the website dont start -> e2e fail