chore(deps): bump dtolnay/rust-toolchain from 1.90 to 1.100

Bumps [dtolnay/rust-toolchain](https://github.com/dtolnay/rust-toolchain) from 1.90 to 1.100.
- [Release notes](https://github.com/dtolnay/rust-toolchain/releases)
- [Commits](dtolnay/rust-toolchain@1.90...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] <[email protected]>

Author: dependabot[bot]

.github/workflows/rust-ci.yml

@@ -57,7 +57,7 @@ jobs:
         working-directory: codex-rs
     steps:
       - uses: actions/checkout@v5
-      - uses: dtolnay/rust-toolchain@1.90
+      - uses: dtolnay/rust-toolchain@1.100
         with:
           components: rustfmt
       - name: cargo fmt
@@ -75,7 +75,7 @@ jobs:
         working-directory: codex-rs
     steps:
       - uses: actions/checkout@v5
-      - uses: dtolnay/rust-toolchain@1.90
+      - uses: dtolnay/rust-toolchain@1.100
       - uses: taiki-e/install-action@44c6d64aa62cd779e873306675c7a58e86d6d532 # v2
         with:
           tool: cargo-shear
@@ -148,7 +148,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v5
-      - uses: dtolnay/rust-toolchain@1.90
+      - uses: dtolnay/rust-toolchain@1.100
         with:
           targets: ${{ matrix.target }}
           components: clippy
@@ -352,7 +352,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v5
-      - uses: dtolnay/rust-toolchain@1.90
+      - uses: dtolnay/rust-toolchain@1.100
         with:
           targets: ${{ matrix.target }}
 

.github/workflows/rust-release.yml

@@ -77,7 +77,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v5
-      - uses: dtolnay/rust-toolchain@1.90
+      - uses: dtolnay/rust-toolchain@1.100
         with:
           targets: ${{ matrix.target }}
 

.github/workflows/sdk.yml

@@ -24,7 +24,7 @@ jobs:
           node-version: 22
           cache: pnpm
 
-      - uses: dtolnay/rust-toolchain@1.90
+      - uses: dtolnay/rust-toolchain@1.100
 
       - name: build codex
         run: cargo build --bin codex