Pin GitHub Actions to full-length commit SHAs

Author: danfiedler-msft

.github/workflows/pr-check.yml

@@ -100,7 +100,7 @@ jobs:
           sparse-checkout-cone-mode: false
 
       - name: Install Rust Toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@7e38f4b43b4db5c8dd498af069a4f6196df1d067 # v1
 
       - name: Cache Rust build
         uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
@@ -188,7 +188,7 @@ jobs:
           sparse-checkout-cone-mode: false
 
       - name: Install Rust Toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@7e38f4b43b4db5c8dd498af069a4f6196df1d067 # v1
 
       - name: Cache Rust build
         uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
@@ -279,7 +279,7 @@ jobs:
           sparse-checkout-cone-mode: false
 
       - name: Install Rust Toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@7e38f4b43b4db5c8dd498af069a4f6196df1d067 # v1
 
       - name: Cache Rust build
         uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0

.github/workflows/push-check.yml

@@ -101,7 +101,7 @@ jobs:
           sparse-checkout-cone-mode: false
 
       - name: Install Rust Toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@7e38f4b43b4db5c8dd498af069a4f6196df1d067 # v1
 
       - name: Cache Rust build
         uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
@@ -189,7 +189,7 @@ jobs:
           sparse-checkout-cone-mode: false
 
       - name: Install Rust Toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@7e38f4b43b4db5c8dd498af069a4f6196df1d067 # v1
 
       - name: Cache Rust build
         uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
@@ -280,7 +280,7 @@ jobs:
           sparse-checkout-cone-mode: false
 
       - name: Install Rust Toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@7e38f4b43b4db5c8dd498af069a4f6196df1d067 # v1
 
       - name: Cache Rust build
         uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0