Update build.yml

Author: shenxianpeng

.github/workflows/build.yml

@@ -36,8 +36,8 @@ jobs:
 
       - name: Install and test ${{ matrix.tool.plugin }} ${{ matrix.version }} on ${{ matrix.os }}
         run: |
-          asdf install ${{ matrix.tool.plugin }} ${{ matrix.version }}
-          asdf set ${{ matrix.tool.plugin }} ${{ matrix.version }}
+          ASDF_DEBUG=1 asdf install ${{ matrix.tool.plugin }} ${{ matrix.version }}
+          ASDF_DEBUG=1 asdf set ${{ matrix.tool.plugin }} ${{ matrix.version }}
           which ${{ matrix.tool.plugin }}
           ${{ matrix.tool.command }}
         env: