build(deps): bump tokio from 1.2.0 to 1.3.0

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.2.0 to 1.3.0.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](tokio-rs/tokio@tokio-1.2.0...tokio-1.3.0)

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

integration/awskms/Cargo.toml

@@ -18,4 +18,4 @@ rusoto_credential = "^0.46"
 rusoto_kms = "^0.46"
 tink-core = "^0.1"
 # Match the version of tokio required by rusoto_* v0.46.0
-tokio = "^1.2"
+tokio = "^1.3"

integration/gcpkms/Cargo.toml

@@ -21,5 +21,5 @@ percent-encoding = "^2.1"
 serde = { version = "^1.0", features = ["derive"] }
 serde_json = "^1.0.64"
 tink-core = "^0.1"
-tokio = "^1.2"
+tokio = "^1.3"
 yup-oauth2 = "^5.1"

testing/Cargo.toml

@@ -27,7 +27,7 @@ tink-proto = "^0.1"
 tink-signature = "^0.1"
 tink-streaming-aead = "^0.1"
 tink-tests = "^0.1"
-tokio = { version = "^1.2", features = [
+tokio = { version = "^1.3", features = [
   "macros",
   "rt-multi-thread",
   "signal",