[workflows:executables] set bash as default shell for all runners

should fix environment variables on Windows

.github/workflows/executables.yml

@@ -15,6 +15,9 @@ jobs:
   build:
 
     runs-on: ${{ matrix.os }}
+    defaults:
+      run:
+        shell: bash
     strategy:
       fail-fast: false
       matrix:
@@ -41,7 +44,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
         architecture: ${{ matrix.architecture }}
 
-    - name: Date
+    - name: Environment Variables
       run: |
         echo "DATE=$(date '+${{ env.DATE_FORMAT }}')" >> "$GITHUB_ENV"
         echo "LABEL=$(python ./scripts/pyinstaller.py --print --os '${{ matrix.os }}' --arch '${{ matrix.architecture }}')" >> "$GITHUB_ENV"
@@ -85,7 +88,7 @@ jobs:
     steps:
     - uses: actions/download-artifact@v4
 
-    - name: Date
+    - name: Environment Variables
       run: echo "DATE=$(date '+${{ env.DATE_FORMAT }}')" >> "$GITHUB_ENV"
 
     - name: Body