Sync im-rc Cargo.toml.

rc/Cargo.toml

@@ -2,6 +2,7 @@
 name = "im-rc"
 version = "15.0.0"
 edition = "2018"
+rust-version = "1.46.0"
 authors = ["Bodil Stokke <bodil@bodil.org>"]
 license = "MPL-2.0+"
 description = "Immutable collection datatypes (the fast but not thread safe version)"
@@ -32,25 +33,25 @@ version_check = "0.9"
 [dependencies]
 typenum = "1.12"
 bitmaps = "2"
-sized-chunks = "0.6"
-rand_core = "0.5.1"
-rand_xoshiro = "0.4"
-quickcheck = { version = "0.9", optional = true }
-proptest = { version = "0.10", optional = true }
+sized-chunks = "0.6.4"
+rand_core = "0.6"
+rand_xoshiro = "0.6"
+quickcheck = { version = "1", optional = true }
+proptest = { version = "1", optional = true }
 serde = { version = "1", optional = true }
 rayon = { version = "1", optional = true }
 refpool = { version = "0.4", optional = true }
-arbitrary = { version = "0.4", optional = true }
+arbitrary = { version = "1.1", optional = true }
 
 [dev-dependencies]
-proptest = "0.10"
+proptest = "1"
 serde = "1"
 serde_json = "1"
 rayon = "1"
-rand = { version = "0.7", features = ["small_rng"] }
-pretty_assertions = "0.6"
+rand = { version = "0.8", features = ["small_rng"] }
+pretty_assertions = "1"
 metrohash = "1"
-proptest-derive = "0.2"
+proptest-derive = "0.3"
 
 ["package.metadata.docs.rs"]
 version_check = "0.9"