use CONDA_PREFIX instead of CONDA when uploading Windows package

since conda-build isn't being installed in the base environment, CONDA_PREFIX is needed to find the conda-bld folder containing the package

Author: ndgrigorian

.github/workflows/conda-package.yml

@@ -104,7 +104,6 @@ jobs:
           miniforge-version: latest
           activate-environment: build
           channels: conda-forge
-          conda-remove-defaults: true
           python-version: ${{ matrix.python }}
 
       - name: Install conda build
@@ -127,7 +126,7 @@ jobs:
       - name: Store conda paths as envs
         shell: bash -l {0}
         run: |
-          echo "CONDA_BLD=$CONDA/conda-bld/win-64/" | tr "\\\\" '/' >> $GITHUB_ENV
+          echo "CONDA_BLD=$CONDA_PREFIX/conda-bld/win-64/" | tr "\\\\" '/' >> $GITHUB_ENV
           echo "WHEELS_OUTPUT_FOLDER=$GITHUB_WORKSPACE${{ runner.os == 'Linux' && '/' || '\\' }}" >> $GITHUB_ENV
 
       - name: Build conda package
@@ -278,7 +277,6 @@ jobs:
         with:
           miniforge-version: latest
           channels: conda-forge
-          conda-remove-defaults: true
           activate-environment: ${{ env.TEST_ENV_NAME }}
           python-version: ${{ matrix.python }}