update dependencies (#2032)

## Issue Addressed

NA

## Proposed Changes

Updates out of date dependencies.

## Additional Info

See also https://github.com/sigp/lighthouse/issues/1712 for a list of dependencies that are still out of date and the resasons.

common/hashset_delay/Cargo.toml

@@ -6,7 +6,7 @@ edition = "2018"
 
 [dependencies]
 futures = "0.3.7"
-tokio-util = { version = "0.4.0", features = ["time"] }
+tokio-util = { version = "0.5.0", features = ["time"] }
 
 [dev-dependencies]
 tokio = { version = "0.3.2", features = ["time", "rt-multi-thread", "macros"] }

common/lighthouse_metrics/Cargo.toml

@@ -8,4 +8,4 @@ edition = "2018"
 
 [dependencies]
 lazy_static = "1.4.0"
-prometheus = "0.10.0"
+prometheus = "0.11.0"

common/lighthouse_metrics/src/lib.rs

@@ -221,7 +221,7 @@ pub fn inc_counter_vec(int_counter_vec: &Result<IntCounterVec>, name: &[&str]) {
     }
 }
 
-pub fn inc_counter_vec_by(int_counter_vec: &Result<IntCounterVec>, name: &[&str], amount: i64) {
+pub fn inc_counter_vec_by(int_counter_vec: &Result<IntCounterVec>, name: &[&str], amount: u64) {
     if let Some(counter) = get_int_counter(int_counter_vec, name) {
         counter.inc_by(amount);
     }
@@ -276,7 +276,7 @@ pub fn inc_counter(counter: &Result<IntCounter>) {
     }
 }
 
-pub fn inc_counter_by(counter: &Result<IntCounter>, value: i64) {
+pub fn inc_counter_by(counter: &Result<IntCounter>, value: u64) {
     if let Ok(counter) = counter {
         counter.inc_by(value);
     }

common/rest_types/Cargo.toml

@@ -15,7 +15,7 @@ bls = { path = "../../crypto/bls" }
 serde = { version = "1.0.110", features = ["derive"] }
 rayon = "1.3.0"
 hyper = "0.13.5"
-tokio = { version = "0.2.22", features = ["sync"] }
+tokio = { version = "0.3.5", features = ["sync"] }
 environment = { path = "../../lighthouse/environment" }
 store = { path = "../../beacon_node/store" }
 beacon_chain = { path = "../../beacon_node/beacon_chain" }