build(deps): bump futures from 0.3.5 to 0.3.6

Bumps [futures](https://github.com/rust-lang/futures-rs) from 0.3.5 to 0.3.6.
- [Release notes](https://github.com/rust-lang/futures-rs/releases)
- [Changelog](https://github.com/rust-lang/futures-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/futures-rs/compare/0.3.5...0.3.6)

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

Cargo.lock

@@ -876,9 +876,9 @@ checksum = "0ba62103ce691c2fd80fbae2213dfdda9ce60804973ac6b6e97de818ea7f52c8"
 
 [[package]]
 name = "futures"
-version = "0.3.5"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e05b85ec287aac0dc34db7d4a569323df697f9c55b99b15d6b4ef8cde49f613"
+checksum = "5d8e3078b7b2a8a671cb7a3d17b4760e4181ea243227776ba83fd043b4ca034e"
 dependencies = [
  "futures-channel",
  "futures-core",
@@ -907,9 +907,9 @@ checksum = "d674eaa0056896d5ada519900dbf97ead2e46a7b6621e8160d79e2f2e1e2784b"
 
 [[package]]
 name = "futures-executor"
-version = "0.3.5"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "10d6bb888be1153d3abeb9006b11b02cf5e9b209fda28693c31ae1e4e012e314"
+checksum = "cc709ca1da6f66143b8c9bec8e6260181869893714e9b5a490b169b0414144ab"
 dependencies = [
  "futures-core",
  "futures-task",

tower-batch/Cargo.toml

@@ -12,7 +12,7 @@ futures-core = "0.3.6"
 pin-project = "0.4.26"
 tracing = "0.1.21"
 tracing-futures = "0.2.4"
-futures = "0.3.5"
+futures = "0.3.6"
 
 [dev-dependencies]
 ed25519-zebra = "2.1.0"

zebra-consensus/Cargo.toml

@@ -13,7 +13,7 @@ rand = "0.7"
 redjubjub = "0.2"
 serde = { version = "1", features = ["serde_derive"] }
 
-futures = "0.3.5"
+futures = "0.3.6"
 futures-util = "0.3.6"
 metrics = "0.12"
 thiserror = "1.0.20"

zebra-state/Cargo.toml

@@ -17,7 +17,7 @@ lazy_static = "1.4.0"
 serde = { version = "1", features = ["serde_derive"] }
 sled = "0.34.4"
 
-futures = "0.3.5"
+futures = "0.3.6"
 metrics = "0.12"
 tower = { version = "0.3.1", features = ["buffer", "util"] }
 tracing = "0.1"

zebra-test/Cargo.toml

@@ -11,7 +11,7 @@ edition = "2018"
 hex = "0.4.2"
 lazy_static = "1.4.0"
 tower = { version = "0.3.1", features = ["util"] }
-futures = "0.3.5"
+futures = "0.3.6"
 color-eyre = "0.5.6"
 tracing = "0.1.21"
 tracing-subscriber = "0.2.12"