Auto merge of #12767 - epage:msrv-refactor, r=weihanglo

Prep for automating MSRV management

### What does this PR try to resolve?

These are the simpler / less controversial parts of #12654 ensuring we get them in now, reducing the chance for conflicts and getting some of the benefits

### How should we test and review this PR?

CI

### Additional information

Author: bors

.github/workflows/main.yml

@@ -253,5 +253,5 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - run: rustup update 1.70 && rustup default 1.70
-    - run: cargo test -p cargo-credential
+    - uses: taiki-e/install-action@cargo-hack
+    - run: cargo hack check --all-targets --rust-version -p cargo-credential

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "home"
-version = "0.5.7" # also update `html_root_url` in `src/lib.rs`
+version = "0.5.8"
 authors = ["Brian Anderson <[email protected]>"]
 documentation = "https://docs.rs/home"
 edition.workspace = true

crates/home/Cargo.toml

@@ -18,7 +18,6 @@
 //!
 //! [discussion]: https://github.com/rust-lang/rust/pull/46799#issuecomment-361156935
 
-#![doc(html_root_url = "https://docs.rs/home/0.5.6")]
 #![deny(rust_2018_idioms)]
 
 pub mod env;