try to fix auto rename of output files

.github/workflows/build-all.yml

@@ -1,9 +1,4 @@
-#
-# test-builds.yml
-# Do test builds to catch compile errors
-#
-
-name: CI
+name: Build All Firmware Variants
 
 on:
   #pull_request:
@@ -95,9 +90,15 @@ jobs:
     - name: Run PlatformIO
       run: platformio run --environment ${{ matrix.platform }}
     
+    - name: Rename Output Files
+      run: |
+        CUSTOM_BUILD_VERSION=$(egrep -o "([0-9]{1,}\.)+[0-9]{1,}" Marlin/src/inc/Version.h -m2 | tail -n1)
+        mv .pio/build/${{ matrix.platform }}/firmware.hex .pio/build/${{ matrix.platform }}/${{ matrix.platform }}_v$CUSTOM_BUILD_VERSION.hex
+        done
+
     - name: Archive production artifacts
       uses: actions/upload-artifact@master
       with:
-        name: ${{ matrix.platform }}.hex
+        name: ${{ matrix.platform }}
         path: |
-         .pio/build/${{ matrix.platform }}/firmware.hex
+         .pio/build/${{ matrix.platform }}/${{ matrix.platform }}_v*.hex