Embeds Python package locks in the binary.

[dom96]

Right now the package lock is embedded in the pyodide.capnp.bin file. This couples the package lock to the Python bundle that we load which isn't ideal.

We have two solutions that we can pursue to fix this:

• Download the lock file from the package bucket at runtime
• Download the lock file at built time and embed it in the binary

We have decided to go for the second option for two reasons:

1. it avoids a costly HTTP request at run time which would delay cold starts
2. it is easier to implement

Lock files are not particularly big so embedding them in the binary shouldn't be a problem.

[github-actions]

The generated output of @cloudflare/workers-types matches the snapshot in types/generated-snapshot 🎉

[hoodmane]

Generally looks good to me.