Bump dtolnay/rust-toolchain

Bumps [dtolnay/rust-toolchain](https://github.com/dtolnay/rust-toolchain) from 0f44b27771c32bda9f458f75a1e241b09791b331 to 0b1efabc08b657293548b77fb76cc02d26091c7e.
- [Release notes](https://github.com/dtolnay/rust-toolchain/releases)
- [Commits](dtolnay/rust-toolchain@0f44b27...0b1efab)

---
updated-dependencies:
- dependency-name: dtolnay/rust-toolchain
  dependency-version: 0b1efabc08b657293548b77fb76cc02d26091c7e
  dependency-type: direct:production
...

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

Author: dependabot[bot]

.github/workflows/claude.yml

@@ -31,7 +31,7 @@ jobs:
           fetch-depth: 1
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@0f44b27771c32bda9f458f75a1e241b09791b331
+        uses: dtolnay/rust-toolchain@0b1efabc08b657293548b77fb76cc02d26091c7e
         with:
           toolchain: "1.89.0"
           components: rustfmt