Fix superfluous quotation mark in constructing channel lines

Author: ndgrigorian

.github/workflows/conda-package.yml

@@ -436,7 +436,7 @@ jobs:
     steps:
       - name: Construct channels line
         run: |
-          echo "CHANNELS="-c ${{ env.INTEL_CHANNEL }} -c conda-forge --override-channels" >> $GITHUB_ENV
+          echo "CHANNELS=-c ${{ env.INTEL_CHANNEL }} -c conda-forge --override-channels" >> $GITHUB_ENV
       - name: Display channels line
         run: |
           echo ${{ env.CHANNELS }}
@@ -588,7 +588,7 @@ jobs:
     steps:
       - name: Construct channels line
         run: |
-          echo "CHANNELS="-c ${{ env.INTEL_CHANNEL }} -c conda-forge --override-channels" >> $GITHUB_ENV
+          echo "CHANNELS=-c ${{ env.INTEL_CHANNEL }} -c conda-forge --override-channels" >> $GITHUB_ENV
       - name: Display channels line
         run: |
           echo ${{ env.CHANNELS }}