change win auto-build script to add more mingw64 env vars (#117)

* fix auto-build script to include previously-missing mingw64 env vars resulting in failures such as for sql cmd
* update ci build tag to 0.3.5

.github/workflows/ci.yml

@@ -22,7 +22,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     env:
-      TAG: "0.3.2"
+      TAG: "0.3.5"
       AMD64_LINUX_GCC: amd64-linux-gcc
       AMD64_LINUX_CLANG: amd64-linux-clang
       AMD64_WINDOWS_MINGW: amd64-windows-mingw
@@ -112,6 +112,13 @@ jobs:
         CC: x86_64-w64-mingw32-gcc
         MAKE: make
         RUN_TESTS: false
+        CXX: x86_64-w64-mingw32-g++
+        CPP: x86_64-w64-mingw32-cpp
+        RANLIB: x86_64-w64-mingw32-ranlib
+        AR: x86_64-w64-mingw32-ar
+        NM: x86_64-w64-mingw32-nm
+        WINDRES: x86_64-w64-mingw32-windres
+
       shell: bash
       run: |
         ./scripts/ci-build.sh