chore(deps): Update dtolnay/rust-toolchain digest to 4cda84d (#87)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[dtolnay/rust-toolchain](https://redirect.github.com/dtolnay/rust-toolchain)
| action | digest | `4be7066` → `4cda84d` |

---

### Configuration

📅 **Schedule**: (UTC)

- Branch creation
  - "before 5am on the first day of the month"
- Automerge
  - At any time (no schedule defined)

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/epage/_rust).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0NC4zLjIiLCJ1cGRhdGVkSW5WZXIiOiI0NC4zLjIiLCJ0YXJnZXRCcmFuY2giOiJtYWluIiwibGFiZWxzIjpbXX0=-->

.github/workflows/ci.yml

@@ -47,7 +47,7 @@ jobs:
       with:
         persist-credentials: false
     - name: Install Rust
-      uses: dtolnay/rust-toolchain@4be7066ada62dd38de10e7b70166bc74ed198c30 # stable
+      uses: dtolnay/rust-toolchain@4cda84d5c5c54efe2404f9d843567869ab1699d4 # stable
       with:
         toolchain: ${{ matrix.rust }}
     - name: Initialize cache
@@ -72,7 +72,7 @@ jobs:
       with:
         persist-credentials: false
     - name: Install Rust
-      uses: dtolnay/rust-toolchain@4be7066ada62dd38de10e7b70166bc74ed198c30 # stable
+      uses: dtolnay/rust-toolchain@4cda84d5c5c54efe2404f9d843567869ab1699d4 # stable
       with:
         toolchain: stable
     - name: Initialize cache
@@ -95,11 +95,11 @@ jobs:
       with:
         persist-credentials: false
     - name: Install stable Rust
-      uses: dtolnay/rust-toolchain@4be7066ada62dd38de10e7b70166bc74ed198c30 # stable
+      uses: dtolnay/rust-toolchain@4cda84d5c5c54efe2404f9d843567869ab1699d4 # stable
       with:
         toolchain: stable
     - name: Install nightly Rust
-      uses: dtolnay/rust-toolchain@4be7066ada62dd38de10e7b70166bc74ed198c30 # stable
+      uses: dtolnay/rust-toolchain@4cda84d5c5c54efe2404f9d843567869ab1699d4 # stable
       with:
         toolchain: nightly
     - name: Downgrade dependencies to minimal versions
@@ -114,7 +114,7 @@ jobs:
       with:
         persist-credentials: false
     - name: Install Rust
-      uses: dtolnay/rust-toolchain@4be7066ada62dd38de10e7b70166bc74ed198c30 # stable
+      uses: dtolnay/rust-toolchain@4cda84d5c5c54efe2404f9d843567869ab1699d4 # stable
       with:
         toolchain: stable
     - name: Initialize cache
@@ -130,7 +130,7 @@ jobs:
       with:
         persist-credentials: false
     - name: Install Rust
-      uses: dtolnay/rust-toolchain@4be7066ada62dd38de10e7b70166bc74ed198c30 # stable
+      uses: dtolnay/rust-toolchain@4cda84d5c5c54efe2404f9d843567869ab1699d4 # stable
       with:
         toolchain: "1.97"  # STABLE
     - name: Initialize cache
@@ -148,7 +148,7 @@ jobs:
       with:
         persist-credentials: false
     - name: Install Rust
-      uses: dtolnay/rust-toolchain@4be7066ada62dd38de10e7b70166bc74ed198c30 # stable
+      uses: dtolnay/rust-toolchain@4cda84d5c5c54efe2404f9d843567869ab1699d4 # stable
       with:
         toolchain: "1.97"  # STABLE
         components: rustfmt
@@ -167,7 +167,7 @@ jobs:
       with:
         persist-credentials: false
     - name: Install Rust
-      uses: dtolnay/rust-toolchain@4be7066ada62dd38de10e7b70166bc74ed198c30 # stable
+      uses: dtolnay/rust-toolchain@4cda84d5c5c54efe2404f9d843567869ab1699d4 # stable
       with:
         toolchain: "1.97"  # STABLE
         components: clippy
@@ -204,7 +204,7 @@ jobs:
       with:
         persist-credentials: false
     - name: Install Rust
-      uses: dtolnay/rust-toolchain@4be7066ada62dd38de10e7b70166bc74ed198c30 # stable
+      uses: dtolnay/rust-toolchain@4cda84d5c5c54efe2404f9d843567869ab1699d4 # stable
       with:
         toolchain: stable
     - name: Initialize cache

.github/workflows/rust-next.yml

@@ -37,7 +37,7 @@ jobs:
       with:
         persist-credentials: false
     - name: Install Rust
-      uses: dtolnay/rust-toolchain@4be7066ada62dd38de10e7b70166bc74ed198c30 # stable
+      uses: dtolnay/rust-toolchain@4cda84d5c5c54efe2404f9d843567869ab1699d4 # stable
       with:
         toolchain: ${{ matrix.rust }}
     - name: Initialize cache
@@ -64,7 +64,7 @@ jobs:
       with:
         persist-credentials: false
     - name: Install Rust
-      uses: dtolnay/rust-toolchain@4be7066ada62dd38de10e7b70166bc74ed198c30 # stable
+      uses: dtolnay/rust-toolchain@4cda84d5c5c54efe2404f9d843567869ab1699d4 # stable
       with:
         toolchain: stable
     - name: Initialize cache