build(deps): Update prometheus-client requirement from 0.16.0 to 0.17…

….0 (#2761)

* build(deps): Update prometheus-client requirement from 0.16.0 to 0.17.0

Updates the requirements on [prometheus-client](https://github.com/prometheus/client_rust) to permit the latest version.
- [Release notes](https://github.com/prometheus/client_rust/releases)
- [Changelog](https://github.com/prometheus/client_rust/blob/master/CHANGELOG.md)
- [Commits](prometheus/client_rust@v0.16.0...v0.17.0)

---
updated-dependencies:
- dependency-name: prometheus-client
  dependency-type: direct:production
...

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

misc/metrics/CHANGELOG.md

@@ -16,6 +16,10 @@
 
 - Update to `libp2p-core` `v0.35.0`.
 
+- Update to `prometheus-client` `v0.17.0`. See [PR 2761].
+
+[PR 2761]: https://github.com/libp2p/rust-libp2p/pull/2761/
+
 [PR 2734]: https://github.com/libp2p/rust-libp2p/pull/2734/
 
 # 0.7.0

misc/metrics/Cargo.toml

@@ -26,7 +26,7 @@ libp2p-kad = { version = "0.39.0", path = "../../protocols/kad", optional = true
 libp2p-ping = { version = "0.38.0", path = "../../protocols/ping", optional = true }
 libp2p-relay =  { version = "0.11.0", path = "../../protocols/relay", optional = true }
 libp2p-swarm = { version = "0.38.0", path = "../../swarm" }
-prometheus-client = "0.16.0"
+prometheus-client = "0.17.0"
 
 [target.'cfg(not(target_os = "unknown"))'.dependencies]
 libp2p-gossipsub =  { version = "0.40.0", path = "../../protocols/gossipsub", optional = true }

protocols/gossipsub/CHANGELOG.md

@@ -4,6 +4,10 @@
 
 - Update to `libp2p-core` `v0.35.0`.
 
+- Update to `prometheus-client` `v0.17.0`. See [PR 2761].
+
+[PR 2761]: https://github.com/libp2p/rust-libp2p/pull/2761/
+
 # 0.39.0
 
 - Update to `libp2p-core` `v0.34.0`.

protocols/gossipsub/Cargo.toml

@@ -31,7 +31,7 @@ serde = { version = "1", optional = true, features = ["derive"] }
 wasm-timer = "0.2.5"
 instant = "0.1.11"
 # Metrics dependencies
-prometheus-client = "0.16.0"
+prometheus-client = "0.17.0"
 
 [dev-dependencies]
 async-std = "1.6.3"