ci/win: use 'test.sh'

.github/workflows/test.yml

@@ -101,7 +101,6 @@ jobs:
       with:
         msystem: ${{ matrix.msystem }}
         install: >
-          tcsh
           git
           base-devel
           mingw-w64-${{ matrix.arch }}-toolchain
@@ -116,12 +115,4 @@ jobs:
       run: pacman -U --noconfirm msys2/*.zst
 
     - name: Test
-      run: |
-        git clone https://github.com/albertxie/iverilog-tutorial
-        cd iverilog-tutorial/code_samples
-        iverilog -o simple.vvp simple.v simple_tb.v
-        vvp simple.vvp
-
-        git clone git://github.com/steveicarus/ivtest.git
-        cd ivtest
-        ./regress
+      run: ./.github/test.sh