chore: Make N-2 the default MSRV

We likely don't want to release these packages every 6 months just for
an MSRV bump.
By moving the MSRV out of the package, `cargo bump-check` will ignore
the MSRV bump.

Inspired by rust-lang#13266

Cargo.toml

@@ -11,7 +11,7 @@ exclude = [
 ]
 
 [workspace.package]
-rust-version = "1.75.0"  # MSRV:1
+rust-version = "1.73"  # MSRV:3
 edition = "2021"
 license = "MIT OR Apache-2.0"
 homepage = "https://github.com/rust-lang/cargo"

crates/cargo-platform/Cargo.toml

@@ -3,7 +3,7 @@ name = "cargo-platform"
 version = "0.1.8"
 edition.workspace = true
 license.workspace = true
-rust-version = "1.73"  # MSRV:3
+rust-version.workspace = true
 homepage.workspace = true
 repository.workspace = true
 documentation = "https://docs.rs/cargo-platform"

crates/home/Cargo.toml

@@ -2,7 +2,7 @@
 name = "home"
 version = "0.5.11"
 authors = ["Brian Anderson <andersrb@gmail.com>"]
-rust-version = "1.73"  # MSRV:3
+rust-version.workspace = true
 documentation = "https://docs.rs/home"
 edition.workspace = true
 include = [

crates/rustfix/Cargo.toml

@@ -5,7 +5,7 @@ authors = [
     "Pascal Hertleif <killercup@gmail.com>",
     "Oliver Schneider <oli-obk@users.noreply.github.com>",
 ]
-rust-version = "1.73"  # MSRV:3
+rust-version.workspace = true
 edition.workspace = true
 license.workspace = true
 homepage.workspace = true

credential/cargo-credential-1password/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "cargo-credential-1password"
 version = "0.4.4"
-rust-version = "1.73"  # MSRV:3
+rust-version.workspace = true
 edition.workspace = true
 license.workspace = true
 homepage.workspace = true

credential/cargo-credential/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "cargo-credential"
 version = "0.4.4"
-rust-version = "1.73"  # MSRV:3
+rust-version.workspace = true
 edition.workspace = true
 license.workspace = true
 homepage.workspace = true