chore(deps): update dtolnay/rust-toolchain requirement to 631a55b12751854ce901bb631d5902ceb48146f7

Updates the requirements on [dtolnay/rust-toolchain](https://github.com/dtolnay/rust-toolchain) to permit the latest version.
- [Release notes](https://github.com/dtolnay/rust-toolchain/releases)
- [Commits](https://github.com/dtolnay/rust-toolchain/commits/631a55b12751854ce901bb631d5902ceb48146f7)

---
updated-dependencies:
- dependency-name: dtolnay/rust-toolchain
  dependency-version: 631a55b12751854ce901bb631d5902ceb48146f7
  dependency-type: direct:production
...

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

.github/workflows/ci.yml

@@ -193,7 +193,7 @@ jobs:
           sudo apt-get install libsqlite3-dev
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@efa25f7f19611383d5b0ccf2d1c8914531636bf9 # master
+        uses: dtolnay/rust-toolchain@631a55b12751854ce901bb631d5902ceb48146f7 # master
         with:
           toolchain: ${{ matrix.rust }}
 
@@ -327,7 +327,7 @@ jobs:
           tool: protoc@3.20.3
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@efa25f7f19611383d5b0ccf2d1c8914531636bf9 # master
+        uses: dtolnay/rust-toolchain@631a55b12751854ce901bb631d5902ceb48146f7 # master
         with:
           toolchain: nightly-2026-02-26
           components: clippy, rustfmt

.github/workflows/documentation.yml

@@ -31,7 +31,7 @@ jobs:
           tool: protoc@3.20.3
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@efa25f7f19611383d5b0ccf2d1c8914531636bf9 # master
+        uses: dtolnay/rust-toolchain@631a55b12751854ce901bb631d5902ceb48146f7 # master
         with:
           toolchain: nightly-2026-02-26