build(deps): bump prometheus from 0.11.0 to 0.12.0 (#339)

Bumps [prometheus](https://github.com/tikv/rust-prometheus) from 0.11.0 to 0.12.0.
- [Release notes](https://github.com/tikv/rust-prometheus/releases)
- [Changelog](https://github.com/tikv/rust-prometheus/blob/master/CHANGELOG.md)
- [Commits](https://github.com/tikv/rust-prometheus/compare/v0.11.0...v0.12.0)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Cargo.lock

@@ -1444,17 +1444,17 @@ dependencies = [
 
 [[package]]
 name = "prometheus"
-version = "0.11.0"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c8425533e7122f0c3cc7a37e6244b16ad3a2cc32ae7ac6276e2a75da0d9c200d"
+checksum = "5986aa8d62380092d2f50f8b1cdba9cb9b6731ffd4b25b51fd126b6c3e05b99c"
 dependencies = [
  "cfg-if",
  "fnv",
  "lazy_static",
  "libc",
+ "memchr",
  "parking_lot",
  "procfs",
- "regex",
  "thiserror",
 ]
 

Cargo.toml

@@ -20,7 +20,7 @@ kankyo = "0.3"
 lazy_static = "1.4"
 log = "0.4"
 mime = "0.3.0"
-prometheus = { version = "0.11", default-features = false, features = ["process"] }
+prometheus = { version = "0.12", default-features = false, features = ["process"] }
 rand = "0"
 reqwest = { version = "0.11", features = ["json"] }
 serde_dhall = "0.10.0"