Add KDL parser (knadh#266)

Bump golang.org/x/crypto from 0.14.0 to 0.17.0 in /providers/nats (kn…

…adh#260)

Bumps [golang.org/x/crypto](https://github.com/golang/crypto) from 0.14.0 to 0.17.0.
- [Commits](golang/crypto@v0.14.0...v0.17.0)

---
updated-dependencies:
- dependency-name: golang.org/x/crypto
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bump golang.org/x/crypto from 0.14.0 to 0.17.0 in /providers/nats (kn…

…adh#260)

Bumps [golang.org/x/crypto](https://github.com/golang/crypto) from 0.14.0 to 0.17.0.
- [Commits](golang/crypto@v0.14.0...v0.17.0)

---
updated-dependencies:
- dependency-name: golang.org/x/crypto
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Add optional `Opt{}` param to basicflag (knadh#259)

* Add optional `Opt{}` param that takes a koanf instance to match posflag's default value behaviour in basic flag. Closes knadh#255.

Bump `vault` provider to v2.

Bump `parameterstore` provider to v2.

Bump `etcd` provider to v2.

Bump `consul` provider to v2.

Bump `appconfig` provider to v2.

feat: support Vault auth method (knadh#229)