build(deps): bump futures from 0.3.11 to 0.3.12

Bumps [futures](https://github.com/rust-lang/futures-rs) from 0.3.11 to 0.3.12.
- [Release notes](https://github.com/rust-lang/futures-rs/releases)
- [Changelog](https://github.com/rust-lang/futures-rs/blob/master/CHANGELOG.md)
- [Commits](rust-lang/futures-rs@0.3.11...0.3.12)

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

Author: dependabot[bot]

Cargo.lock

@@ -12,7 +12,7 @@ futures-core = "0.3.6"
 pin-project = "0.4.27"
 tracing = "0.1.22"
 tracing-futures = "0.2.4"
-futures = "0.3.11"
+futures = "0.3.12"
 
 [dev-dependencies]
 ed25519-zebra = "2.1.0"

tower-batch/Cargo.toml

@@ -14,7 +14,7 @@ rand = "0.7"
 redjubjub = "0.2"
 serde = { version = "1", features = ["serde_derive"] }
 
-futures = "0.3.11"
+futures = "0.3.12"
 futures-util = "0.3.6"
 metrics = "0.13.0-alpha.8"
 thiserror = "1.0.23"

zebra-consensus/Cargo.toml

@@ -15,7 +15,7 @@ hex = "0.4.2"
 lazy_static = "1.4.0"
 serde = { version = "1", features = ["serde_derive"] }
 
-futures = "0.3.11"
+futures = "0.3.12"
 metrics = "0.13.0-alpha.8"
 tower = { version = "0.4", features = ["buffer", "util"] }
 tracing = "0.1"

zebra-state/Cargo.toml

@@ -11,7 +11,7 @@ edition = "2018"
 hex = "0.4.2"
 lazy_static = "1.4.0"
 tower = { version = "0.4", features = ["util"] }
-futures = "0.3.11"
+futures = "0.3.12"
 color-eyre = "0.5.10"
 tracing = "0.1.22"
 tracing-subscriber = "0.2.15"