test: use correct matrix syntax

.forgejo/workflows/test.yml

@@ -8,23 +8,23 @@ jobs:
     strategy:
       matrix:
         toolchain:
-          - stable
-          - nightly
+          - name: stable
+          - name: nightly
 
     steps:
       - uses: actions/checkout@v4
 
-      - name: Test ${{ toolchain}}
+      - name: Test ${{ matrix.toolchain.name }}
         uses: https://git.kemitix.net/kemitix/rust@next
         with:
-          args: ${{toolchain}} cargo test
+          args: ${{ matrix.toolchain.name }} cargo test
 
-      - name: Build ${{ toolchain }}
+      - name: Build ${{ matrix.toolchain.name }}
         uses: https://git.kemitix.net/kemitix/rust@next
         with:
-          args: ${{ toolchain }} cargo build
+          args: ${{ matrix.toolchain.name }} cargo build
 
-      - name: Run ${{ toolchain }}
+      - name: Run ${{ matrix.toolchain.name }}
         uses: https://git.kemitix.net/kemitix/rust@next
         with:
-          args: ${{ toolchain }} cargo run
+          args: ${{ matrix.toolchain.name }} cargo run