fix: astral-uv format for lpci, revert for charmcraft

.launchpad.yaml

@@ -6,7 +6,8 @@ jobs:
     series: noble
     architectures: amd64
     snaps:
-      - astral-uv
+      - name: astral-uv
+        classic: true
     run: |
       uv tool install tox --with tox-uv
       export PATH="${HOME}/.local/bin:${PATH}"

charmcraft.yaml

@@ -31,8 +31,7 @@ parts:
     plugin: uv
     source: .
     build-snaps:
-      - name: astral-uv
-        classic: true
+      - astral-uv
   
   flutter-3.38.9:
     plugin: nil