Bump the cargo group with 4 updates

Bumps the cargo group with 4 updates: [hyper](https://github.com/hyperium/hyper), [regex](https://github.com/rust-lang/regex), [bumpalo](https://github.com/fitzgen/bumpalo) and [generic-array](https://github.com/fizyk20/generic-array).


Updates `hyper` from 0.10.16 to 0.14.15
- [Release notes](https://github.com/hyperium/hyper/releases)
- [Changelog](https://github.com/hyperium/hyper/blob/master/CHANGELOG.md)
- [Commits](hyperium/hyper@v0.10.16...v0.14.15)

Updates `regex` from 1.4.1 to 1.5.5
- [Release notes](https://github.com/rust-lang/regex/releases)
- [Changelog](https://github.com/rust-lang/regex/blob/master/CHANGELOG.md)
- [Commits](rust-lang/regex@1.4.1...1.5.5)

Updates `bumpalo` from 3.9.1 to 3.16.0
- [Changelog](https://github.com/fitzgen/bumpalo/blob/main/CHANGELOG.md)
- [Commits](fitzgen/bumpalo@3.9.1...3.16.0)

Updates `generic-array` from 0.12.3 to 0.12.4
- [Release notes](https://github.com/fizyk20/generic-array/releases)
- [Changelog](https://github.com/fizyk20/generic-array/blob/0.12.4/CHANGELOG.md)
- [Commits](fizyk20/generic-array@0.12.3...0.12.4)

---
updated-dependencies:
- dependency-name: hyper
  dependency-type: direct:production
  dependency-group: cargo
- dependency-name: regex
  dependency-type: direct:production
  dependency-group: cargo
- dependency-name: bumpalo
  dependency-type: indirect
  dependency-group: cargo
- dependency-name: generic-array
  dependency-type: indirect
  dependency-group: cargo
...

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

em-app/Cargo.toml

@@ -13,7 +13,7 @@ keywords = [ "sgx" ]
 b64-ct = "0.1.0"
 em-client = { version = "3.0.0", default-features = false, features = ["client"] }
 em-node-agent-client = "1.0.0"
-hyper = { version = "0.10", default-features = false }
+hyper = { version = "0.14", default-features = false }
 mbedtls = { version = "0.12", default-features = false, features = ["rdrand", "std", "ssl"] }
 pkix = ">=0.1.2, <0.3.0"