Bump 'rayon' dependency version

Cargo.lock

@@ -657,16 +657,6 @@ dependencies = [
  "minimal-lexical",
 ]
 
-[[package]]
-name = "num_cpus"
-version = "1.16.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4161fcb6d602d4d2081af7c3a45852d875a03dd337a6bfdd6e06407b61342a43"
-dependencies = [
- "hermit-abi",
- "libc",
-]
-
 [[package]]
 name = "parking_lot"
 version = "0.12.1"
@@ -800,9 +790,9 @@ dependencies = [
 
 [[package]]
 name = "rayon"
-version = "1.7.0"
+version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d2df5196e37bcc87abebc0053e20787d73847bb33134a69841207dd0a47f03b"
+checksum = "9c27db03db7734835b3f53954b534c91069375ce6ccaa2e065441e07d9b6cdb1"
 dependencies = [
  "either",
  "rayon-core",
@@ -810,14 +800,12 @@ dependencies = [
 
 [[package]]
 name = "rayon-core"
-version = "1.11.0"
+version = "1.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b8f95bd6966f5c87776639160a66bd8ab9895d9d4ab01ddba9fc60661aebe8d"
+checksum = "5ce3fb6ad83f861aac485e76e1985cd109d9a3713802152be56c3b1f0e0658ed"
 dependencies = [
- "crossbeam-channel",
  "crossbeam-deque",
  "crossbeam-utils",
- "num_cpus",
 ]
 
 [[package]]

Cargo.toml

@@ -32,7 +32,7 @@ env_logger = "0.10"
 log = "0.4"
 parking_lot = "0.12"
 prometheus = { version = "0.13", optional = true }
-rayon = "1.7"
+rayon = "1.8"
 serde = "1.0"
 serde_derive = "1.0, <=1.0.171"  # avoid precompiled binaries (https://github.com/serde-rs/serde/issues/2538)
 serde_json = "1.0"