Deprecated SPDX IDs broke builds

[nx10]

The following of our default SPDX IDs have been deprecated (full deprecated list at bottom here):

• LGPL-2.1 -> LGPL-2.1-only (this is our default!)
• LGPL-3.0 -> LGPL-3.0-only

this broke builds:

   Building app-name @ file:///home/runner/work/template-python-repository/template-python-repository
  × Failed to build `app-name @
  │ file:///home/runner/work/template-python-repository/template-python-repository`
  ├─▶ Invalid pyproject.toml
  ├─▶ `project.license` is not a valid SPDX expression: LGPL-2.1
  ╰─▶ LGPL-2.1
      ^^^^^^^^ a deprecated license identifier was used
Error: Process completed with exit code 1.

(ref)

I've manually clicked through all the ones we offer by default and added a small auto patching logic to restore builds for now:

57089e3

We should remove this patch once github updates their API responses or we come up with a better solution.

Note that everything downstream that uses either of these licenses will likely soon need updating. We might wanna automate updating those.