chore(deps): update dtolnay/rust-toolchain digest to 6c977a6

Author: renovate[bot]

.github/workflows/build-artifacts.yml

@@ -60,7 +60,7 @@ jobs:
           fetch-depth: ${{ inputs.fetch_depth }}
 
       - name: Setup Rust
-        uses: dtolnay/rust-toolchain@2c7215f132e9ebf062739d9130488b56d53c060c # master
+        uses: dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772 # master
         with:
           toolchain: ${{ inputs.toolchain }}
       - name: Rust Cache

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
       - name: Install rust
-        uses: dtolnay/rust-toolchain@2c7215f132e9ebf062739d9130488b56d53c060c # master
+        uses: dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772 # master
         with:
           toolchain: stable
       - name: Rust Cache

.github/workflows/release.yml

@@ -59,7 +59,7 @@ jobs:
           fetch-depth: 0
 
       - name: Setup Rust
-        uses: dtolnay/rust-toolchain@2c7215f132e9ebf062739d9130488b56d53c060c # master
+        uses: dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772 # master
         with:
           toolchain: stable