Bump proc-macro2 from 1.0.43 to 1.0.44
Bump proc-macro2 from 1.0.43 to 1.0.44

Bumps [proc-macro2](https://github.com/dtolnay/proc-macro2) from 1.0.43 to 1.0.44.
- [Release notes](https://github.com/dtolnay/proc-macro2/releases)
- [Commits](https://github.com/dtolnay/proc-macro2/compare/1.0.43...1.0.44)

---
updated-dependencies:
- dependency-name: proc-macro2
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
ryanfowler/lines