Move to only yaml flatpak configs

resources/flatpak/python3-expandvars.json

-{
-    "name": "python3-expandvars",
-    "buildsystem": "simple",
-    "build-commands": [
-        "pip3 install --verbose --exists-action=i --no-index --find-links=\"file://${PWD}\" --prefix=${FLATPAK_DEST} \"expandvars\" --no-build-isolation"
-    ],
-    "sources": [
-        {
-            "type": "file",
-            "url": "https://files.pythonhosted.org/packages/df/b3/072c28eace372ba7630ea187b7efd7f09cc8bcebf847a96b5e03e9cc0828/expandvars-0.12.0-py3-none-any.whl",
-            "sha256": "7432c1c2ae50c671a8146583177d60020dd210ada7d940e52af91f1f84f753b2"
-        }
-    ]
-}
\ No newline at end of file

resources/flatpak/python3-expandvars.yaml

+# Generated with flatpak-pip-generator --yaml expandvars
+name: python3-expandvars
+buildsystem: simple
+build-commands:
+  - pip3 install --verbose --exists-action=i --no-index --find-links="file://${PWD}"
+    --prefix=${FLATPAK_DEST} "expandvars" --no-build-isolation
+sources:
+  - type: file
+    url: https://files.pythonhosted.org/packages/df/b3/072c28eace372ba7630ea187b7efd7f09cc8bcebf847a96b5e03e9cc0828/expandvars-0.12.0-py3-none-any.whl
+    sha256: 7432c1c2ae50c671a8146583177d60020dd210ada7d940e52af91f1f84f753b2

resources/flatpak/rocks.syng.Syng.yml

@@ -25,7 +25,7 @@ finish-args:
 command: syng
 modules:
   - python3-pyyaml.yaml
-  - python3-expandvars.json
+  - python3-expandvars.yaml
   - python3-aiohttp.yaml
   - python3-requirements-client.yaml
   - python3-poetry-core.yaml