feat: use uv instead of poetry for CI, docker and development (#3325)

Co-authored-by: arcbtc <ben@arc.wales>

.github/workflows/regtest.yml

@@ -32,6 +32,10 @@ jobs:
         run: |
           docker build -t lnbits/lnbits .
 
+      - uses: ./.github/actions/prepare
+        with:
+          python-version: ${{ inputs.python-version }}
+
       - name: Setup Regtest
         run: |
           git clone https://github.com/lnbits/legend-regtest-enviroment.git docker
@@ -40,10 +44,6 @@ jobs:
           ./tests
           sudo chmod -R a+rwx .
 
-      - uses: ./.github/actions/prepare
-        with:
-          python-version: ${{ inputs.python-version }}
-
       - name: Run pytest
         uses: pavelzw/pytest-action@v2
         env: