Bump MSRV to 1.70 and relax colored crate version requirements

Cargo.toml

@@ -11,15 +11,15 @@ keywords = ["mock", "mocks", "http", "webmock", "webmocks"]
 categories = ["development-tools::testing", "web-programming"]
 exclude = ["/.appveyor.yml", "/.travis.yml", "/benchmarks.txt", "/docs/", "/slides.pdf"]
 edition = "2021"
-rust-version = "1.68"
+rust-version = "1.70"
 
 [badges]
 travis-ci = { repository = "lipanski/mockito", branch = "master" }
 appveyor = { repository = "lipanski/mockito", branch = "master", service = "github" }
 
 [dependencies]
 assert-json-diff = "2.0"
-colored = { version = "~2.0", optional = true }
+colored = { version = "2.0", optional = true }
 futures-core = "0.3"
 hyper = { version = "0.14", features = ["http1", "http2", "server", "stream"] }
 log = "0.4"

README.md

@@ -3,7 +3,7 @@
   <p align="center">
     <a href="https://docs.rs/mockito"><img src="https://docs.rs/mockito/badge.svg"></a>
     <a href="https://crates.io/crates/mockito"><img src="https://img.shields.io/crates/v/mockito.svg"></a>
-    <img src="https://img.shields.io/badge/rust%20version-%3E%3D1.68.0-orange">
+    <img src="https://img.shields.io/badge/rust%20version-%3E%3D1.70.0-orange">
     <a href="https://crates.io/crates/mockito"><img src="https://img.shields.io/crates/d/mockito"></a>
     <a href="https://github.com/lipanski/mockito/actions/workflows/tests.yml/?branch=master"><img src="https://github.com/lipanski/mockito/actions/workflows/tests.yml/badge.svg?branch=master"></a>
   </p>
@@ -139,7 +139,7 @@ fn main() {
 
 ## Minimum supported Rust toolchain
 
-The current minimum support Rust toolchain is **1.68.0**
+The current minimum support Rust toolchain is **1.70.0**
 
 ## Contribution Guidelines
 
@@ -161,7 +161,7 @@ cargo test
 ...or run tests using a different toolchain:
 
 ```sh
-rustup run --install 1.68.0 cargo test
+rustup run --install 1.70.0 cargo test
 ```
 
 ...or run tests while disabling the default features (e.g. the colors):
@@ -201,7 +201,7 @@ rustup component add clippy
 The linter is always run on the minimum supported Rust version:
 
 ```sh
-rustup run --install 1.68.0 cargo clippy-mockito
+rustup run --install 1.70.0 cargo clippy-mockito
 ```
 
 ### Release