Try to fix gh actions (#1117)

.github/workflows/build.yml

@@ -26,8 +26,8 @@ jobs:
     - name: Cache PlatformIO
       uses: actions/cache@v3
       with:
-        path: ~/.platformio
-        key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
+        path: ~/.platformio/.cache
+        key: ${{ runner.os }}-pio
     - name: Set up Python
       uses: actions/setup-python@v4
       with:
@@ -50,11 +50,13 @@ jobs:
       if: startsWith(github.ref, 'refs/tags/v')
     - name: Run PlatformIO
       run: pio run -e ${{ matrix.env }}
-    - name: Upload Artifact
+    - name: Rename artifact
+      run: cp .pio/build/${{ matrix.env }}/firmware.bin ${{ matrix.env }}.bin
+    - name: Upload artifact
       uses: actions/upload-artifact@v3
       with:
         name: ${{ matrix.env }}.bin
-        path: .pio/build/${{ matrix.env }}/firmware.bin
+        path: ${{ matrix.env }}.bin
   release:
     runs-on: ubuntu-latest
     needs: build  # This job needs to wait for all matrix builds to complete