283 update lightning to fix critical alert

[jashapiro]

Closes #283
The main goal here was to update lightning to include the security fix, but I also updated the requirements script to better deal with updating python packages (I would otherwise have to delete the files and recreate them every time).

I also added an extra bit to the version string for ~= dependencies to freeze them at the minor version level; I had misunderstood the syntax to freeze at the given level, but it actually does the level above. A ~=1.1string will allow updates to version1.1.x, 1.2.xor generally1.y.x, but if we specify ~=1.1.1, it will only update to 1.1.x`, which is what we likely want.

The package changes seem to be mostly low-level; I don't expect significant effects, but we will want to test these at least in part before a new release of scpcaTools and incorporation into scpca-nf.

[jaclyn-taroni]

👍🏻