ci: regression on dev node version

Author: TobiTenno

.github/workflows/regression.yaml

@@ -12,19 +12,13 @@ jobs:
   test:
     name: Test
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        node-version:
-          - 'lts/gallium'
-          - 'lts/hydrogen'
-          - 'lts/iron'
     steps:
     - name: Checkout
       uses: actions/checkout@v6
     - name: Setup
       uses: actions/setup-node@v6
       with:
-        node-version: ${{ matrix.node-version }}
+        node-version-file: '.nvmrc'
     - name: Test
       run: |
         npm ci