ci: Fixes to toolchain installation

.github/workflows/ci.yml

@@ -168,8 +168,7 @@ jobs:
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Install Rust stable
-        if: matrix.rust == 'stable'
+      - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}

.github/workflows/xtask.yml

@@ -62,7 +62,7 @@ jobs:
           key: |
             ${{ steps.cachekey.outputs[format('cachekey-{0}', matrix.cachekey-id)] }}
 
-      - name: Install rust stable toolchain
+      - name: Install Rust stable toolchain
         if: steps.xtask-cache.outputs.cache-hit != 'true'
         uses: dtolnay/rust-toolchain@stable