Export python binary in ENV to satisfy CMake

Use env var to force the python version
set python for Cmake and remove python cache

.github/workflows/build_viewer.yml

@@ -19,6 +19,7 @@ env:
   fallback_platform: ${platform}
   FS_RELEASE_CHAN: ${FS_RELEASE_TYPE}x64
   FS_GRID: "GRID FLAGS NOT SET"
+  PYTHON: 
 
 jobs:
   build_matrix:
@@ -47,20 +48,18 @@ jobs:
       - uses: actions/setup-python@v4
         id: py311
         with:
-          python-version: '3.11.6'
-          cache: 'pip'
+          python-version: '3.11'
 
-      - name: Install python requirements (windows only)
-        if: runner.os == 'Windows'
+      - name: Set PYTHON environment for CMake
         run: |
-          python3 -m pip install -r requirements.txt --user
-          python -m pip install -r requirements.txt --user
-          echo "$HOME/.local/bin" >> $GITHUB_PATH
-      - name: Install python requirements (non-windows)
-        if: runner.os != 'Windows'
+          echo "PYTHON=${{ steps.py311.outputs.python-path }}" >> $GITHUB_ENV
+        shell: bash
+
+      - name: Install python requirements
         run: |
           python3 -m pip install -r requirements.txt
           python -m pip install -r requirements.txt
+          # export the new python to the environment var $PYTHON
 
       - name: Check python version
         run: python -V
@@ -322,6 +321,9 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     needs: build_matrix
+    env:
+      FS_BUILD_WEBHOOK_URL:
+      FS_RELEASE_FOLDER:
     if: always()
     steps:
       - name: Checkout files