build(deps): bump prometheus from 0.12.0 to 0.13.0 (#401)

Bumps [prometheus](https://github.com/tikv/rust-prometheus) from 0.12.0 to 0.13.0.
- [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/v0.12.0...v0.13.0)

---
updated-dependencies:
- dependency-name: prometheus
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

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

1 files changed, 1 insertions, 1 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 0f451d8..c97667f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,7 +21,7 @@ kankyo = "0.3"
 lazy_static = "1.4"
 log = "0.4"
 mime = "0.3.0"
-prometheus = { version = "0.12", default-features = false, features = ["process"] }
+prometheus = { version = "0.13", default-features = false, features = ["process"] }
 rand = "0"
 reqwest = { version = "0.11", features = ["json"] }
 serde_dhall = "0.10.1"