chore(deps): bump the cargo group across 4 directories with 3 updates

Bumps the cargo group with 2 updates in the /examples/demo directory: [rsa](https://github.com/RustCrypto/RSA) and [rustls](https://github.com/rustls/rustls).
Bumps the cargo group with 3 updates in the /starters/rest-api directory: [anstream](https://github.com/rust-cli/anstyle), [rsa](https://github.com/RustCrypto/RSA) and [rustls](https://github.com/rustls/rustls).
Bumps the cargo group with 3 updates in the /starters/saas directory: [anstream](https://github.com/rust-cli/anstyle), [rsa](https://github.com/RustCrypto/RSA) and [rustls](https://github.com/rustls/rustls).
Bumps the cargo group with 1 update in the /xtask directory: [anstream](https://github.com/rust-cli/anstyle).


Updates `rsa` from 0.9.6 to 0.9.7
- [Changelog](https://github.com/RustCrypto/RSA/blob/v0.9.7/CHANGELOG.md)
- [Commits](RustCrypto/RSA@v0.9.6...v0.9.7)

Updates `rustls` from 0.23.17 to 0.23.19
- [Release notes](https://github.com/rustls/rustls/releases)
- [Changelog](https://github.com/rustls/rustls/blob/main/CHANGELOG.md)
- [Commits](rustls/rustls@v/0.23.17...v/0.23.19)

Updates `anstream` from 0.6.14 to 0.6.18
- [Commits](rust-cli/anstyle@anstream-v0.6.14...anstream-v0.6.18)

Updates `rsa` from 0.9.6 to 0.9.7
- [Changelog](https://github.com/RustCrypto/RSA/blob/v0.9.7/CHANGELOG.md)
- [Commits](RustCrypto/RSA@v0.9.6...v0.9.7)

Updates `rustls` from 0.23.12 to 0.23.19
- [Release notes](https://github.com/rustls/rustls/releases)
- [Changelog](https://github.com/rustls/rustls/blob/main/CHANGELOG.md)
- [Commits](rustls/rustls@v/0.23.17...v/0.23.19)

Updates `anstream` from 0.6.14 to 0.6.18
- [Commits](rust-cli/anstyle@anstream-v0.6.14...anstream-v0.6.18)

Updates `rsa` from 0.9.6 to 0.9.7
- [Changelog](https://github.com/RustCrypto/RSA/blob/v0.9.7/CHANGELOG.md)
- [Commits](RustCrypto/RSA@v0.9.6...v0.9.7)

Updates `rustls` from 0.23.12 to 0.23.19
- [Release notes](https://github.com/rustls/rustls/releases)
- [Changelog](https://github.com/rustls/rustls/blob/main/CHANGELOG.md)
- [Commits](rustls/rustls@v/0.23.17...v/0.23.19)

Updates `anstream` from 0.6.4 to 0.6.15
- [Commits](rust-cli/anstyle@anstream-v0.6.14...anstream-v0.6.18)

---
updated-dependencies:
- dependency-name: rsa
  dependency-type: indirect
  dependency-group: cargo
- dependency-name: rustls
  dependency-type: indirect
  dependency-group: cargo
- dependency-name: anstream
  dependency-type: indirect
  dependency-group: cargo
- dependency-name: rsa
  dependency-type: indirect
  dependency-group: cargo
- dependency-name: rustls
  dependency-type: indirect
  dependency-group: cargo
- dependency-name: anstream
  dependency-type: indirect
  dependency-group: cargo
- dependency-name: rsa
  dependency-type: indirect
  dependency-group: cargo
- dependency-name: rustls
  dependency-type: indirect
  dependency-group: cargo
- dependency-name: anstream
  dependency-type: indirect
  dependency-group: cargo
...

Signed-off-by: dependabot[bot] <[email protected]>