fix(ci): add missing shell config

.github/actions/build-server/action.yml

@@ -11,14 +11,17 @@ runs:
         node-version: 20
         cache: "npm"
     - name: Install dependencies
+      shell: bash
       run: npm ci
     - name: Run Linux server build
       env:
         MATRIX_ARCH: ${{ inputs.arch }}
+      shell: bash
       run: |
         npm run update-build-info
         ./bin/build-server.sh
     - name: Prepare artifacts
+      shell: bash
       run: |
         mkdir -p upload
         file=$(find dist -name '*.tar.xz' -print -quit)