Bump dtolnay/rust-toolchain from 1.74 to 1.100

Bumps [dtolnay/rust-toolchain](https://github.com/dtolnay/rust-toolchain) from 1.74 to 1.100.
- [Release notes](https://github.com/dtolnay/rust-toolchain/releases)
- [Commits](https://github.com/dtolnay/rust-toolchain/compare/1.74...1.100)

---
updated-dependencies:
- dependency-name: dtolnay/rust-toolchain
  dependency-version: '1.100'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/ci.yml

@@ -44,7 +44,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - uses: dtolnay/rust-toolchain@1.74
+      - uses: dtolnay/rust-toolchain@1.100
         with:
           toolchain: "1.70"