Remove low-severity CI workflow findings

Author: kdkiss

.github/workflows/ci.yml

@@ -26,8 +26,8 @@ jobs:
         with:
           persist-credentials: false
 
-      - name: Install Rust stable
-        uses: dtolnay/rust-toolchain@29eef336d9b2848a0b548edc03f92a220660cdb8 # stable
+      - name: Select runner-provided Rust stable
+        run: rustup default stable
 
       - name: Install cargo-audit
         run: cargo install cargo-audit --locked
@@ -46,10 +46,10 @@ jobs:
         with:
           persist-credentials: false
 
-      - name: Install Rust stable
-        uses: dtolnay/rust-toolchain@29eef336d9b2848a0b548edc03f92a220660cdb8 # stable
-        with:
-          components: rustfmt, clippy
+      - name: Select runner-provided Rust stable
+        run: |
+          rustup default stable
+          rustup component add rustfmt clippy
 
       - name: Cache cargo registry
         uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
@@ -91,10 +91,10 @@ jobs:
         with:
           persist-credentials: false
 
-      - name: Install Rust stable
-        uses: dtolnay/rust-toolchain@29eef336d9b2848a0b548edc03f92a220660cdb8 # stable
-        with:
-          components: rustfmt, clippy
+      - name: Select runner-provided Rust stable
+        run: |
+          rustup default stable
+          rustup component add rustfmt clippy
 
       - name: Cache cargo registry
         uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4