Bump dtolnay/rust-toolchain from 1.70 to 1.80

Bumps [dtolnay/rust-toolchain](https://github.com/dtolnay/rust-toolchain) from 1.70 to 1.80.
- [Release notes](https://github.com/dtolnay/rust-toolchain/releases)
- [Commits](dtolnay/rust-toolchain@1.70...1.80)

---
updated-dependencies:
- dependency-name: dtolnay/rust-toolchain
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/ci.yml

@@ -16,15 +16,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@1.70
+      - uses: dtolnay/rust-toolchain@1.80
       - run: cargo check --all-targets --all-features
 
   fmt:
     name: cargo fmt
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@1.70
+      - uses: dtolnay/rust-toolchain@1.80
         with:
           components: rustfmt
       - run: cargo fmt --all --check
@@ -34,15 +34,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@1.70
+      - uses: dtolnay/rust-toolchain@1.80
       - run: cargo test --all-targets --all-features
 
   clippy:
     name: cargo clippy
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@1.70
+      - uses: dtolnay/rust-toolchain@1.80
         with:
           components: clippy
       - run: cargo clippy --all-targets --all-features -- -D warnings