Force edition 2024 for rustfmt (#22)

Author: Jake-Shadle

.cargo/config.toml

@@ -11,7 +11,6 @@ rustflags = [
     "-Wclippy::dbg_macro",
     "-Wclippy::debug_assert_with_mut_call",
     "-Wclippy::doc_markdown",
-    "-Wclippy::empty_enum",
     "-Wclippy::enum_glob_use",
     "-Wclippy::exit",
     "-Wclippy::expl_impl_clone_on_copy",
@@ -39,7 +38,6 @@ rustflags = [
     "-Wclippy::map_err_ignore",
     "-Wclippy::map_flatten",
     "-Wclippy::map_unwrap_or",
-    "-Wclippy::match_on_vec_items",
     "-Wclippy::match_same_arms",
     "-Wclippy::match_wild_err_arm",
     "-Wclippy::match_wildcard_for_single_variants",
@@ -62,7 +60,6 @@ rustflags = [
     "-Wclippy::string_add_assign",
     "-Wclippy::string_add",
     "-Wclippy::string_lit_as_bytes",
-    "-Wclippy::string_to_string",
     "-Wclippy::todo",
     "-Wclippy::trait_duplication_in_bounds",
     "-Wclippy::unimplemented",

.github/workflows/rust-ci.yml

@@ -23,7 +23,7 @@ jobs:
       - name: check rustfmt
         run: |
           rustup component add rustfmt
-          cargo fmt -- --check --color always
+          rustfmt --check --color always --edition 2024 toml-span/src/**.rs
 
       # run clippy to verify we have no warnings
       - run: cargo fetch