Update clap requirement from 2.32 to 3.0

Updates the requirements on [clap](https://github.com/clap-rs/clap) to permit the latest version.
- [Release notes](https://github.com/clap-rs/clap/releases)
- [Changelog](https://github.com/clap-rs/clap/blob/master/CHANGELOG.md)
- [Commits](https://github.com/clap-rs/clap/compare/clap_generate-v3.0.0-rc.0...clap_complete-v3.0.0)

---
updated-dependencies:
- dependency-name: clap
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

acmed/Cargo.toml

@@ -23,7 +23,7 @@ openssl_vendored = ["crypto_openssl", "acme_common/openssl_vendored", "attohttpc
 acme_common = { path = "../acme_common" }
 attohttpc = { version = "0.18", default-features = false, features = ["charsets", "json"] }
 bincode = "1.3"
-clap = "2.32"
+clap = "3.0"
 glob = "0.3"
 log = "0.4"
 nom = { version = "7.0", default-features = false, features = [] }

tacd/Cargo.toml

@@ -20,6 +20,6 @@ openssl_vendored = ["crypto_openssl", "acme_common/openssl_vendored"]
 
 [dependencies]
 acme_common = { path = "../acme_common" }
-clap = "2.32"
+clap = "3.0"
 log = "0.4"
 openssl = "0.10"