maint: version-up and minimize where we mention the version

Remove the version number from tools/gen_large_yaml so that we
can avoid needing to update the version in two places.

saphyr/README.md

@@ -17,7 +17,7 @@ Add the following to the Cargo.toml of your project:
 
 ```toml
 [dependencies]
-yaml-rust2 = "0.7"
+yaml-rust2 = "0.8"
 ```
 
 Use `yaml_rust2::YamlLoader` to load YAML documents and access them as `Yaml` objects:

saphyr/documents/2024-03-15-FirstRelease.md

@@ -96,7 +96,7 @@ Switching to `yaml-rust2` should be a very simple process. Change your `Cargo.to
 
 ```diff
 -yaml-rust = "0.4.4"
-+yaml-rust2 = "0.6.0"
++yaml-rust2 = "0.8.0"
 ```
 
 As for your code, you have one of two solutions:

saphyr/src/lib.rs

@@ -11,7 +11,7 @@
 //!
 //! ```toml
 //! [dependencies]
-//! yaml-rust2 = "0.7.0"
+//! yaml-rust2 = "0.8.0"
 //! ```
 //!
 //! # Examples

saphyr/tools/gen_large_yaml/Cargo.toml

@@ -11,7 +11,7 @@ readme = "README.md"
 edition = "2018"
 
 [dependencies]
-yaml-rust2 = { version = "0.7.0", path = "../../" }
+yaml-rust2 = { path = "../.." }
 rand = { version = "0.8.5", features = [ "small_rng" ] }
 lipsum = "0.9.0"