Update dependencies

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pushover-rs"
-version = "0.3.14"
+version = "0.3.15"
 edition = "2021"
 license = "MIT"
 description = "A Rust client for Pushover (https://www.pushover.net)"
@@ -18,13 +18,13 @@ keywords = [
 authors = ["Oscuro87"]
 
 [dependencies]
-tokio = { version = "1.28.0", features = ["macros", "rt-multi-thread"] }
-reqwest = { version = "0.11.17", features = ["json", "blocking", "multipart"] }
-serde = { version = "1.0.162", features = ["derive"] }
+tokio = { version = "1.34.0", features = ["macros", "rt-multi-thread"] }
+reqwest = { version = "0.11.22", features = ["json", "blocking", "multipart"] }
+serde = { version = "1.0.193", features = ["derive"] }
 
 [dev-dependencies]
-serde_json = "1.0.96"
-ron = "0.8.0"
+serde_json = "1.0.108"
+ron = "0.8.1"
 
 [features]
 default = []