ci: run jmeter only if linting passes to save resources (#2366)

also uses `prepare` action to initialize python env

.github/workflows/ci.yml

@@ -56,6 +56,7 @@ jobs:
       CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
   jmeter:
+    needs: [ lint ]
     strategy:
       matrix:
         python-version: ["3.9"]

.github/workflows/jmeter.yml

@@ -20,25 +20,15 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Set up Python ${{ inputs.python-version }}
-        uses: actions/setup-python@v5
+      - uses: ./.github/actions/prepare
         with:
           python-version: ${{ inputs.python-version }}
-          cache: "pip"
-
-      - name: Set up Poetry ${{ inputs.poetry-version }}
-        uses: abatilo/actions-poetry@v2
-        with:
-          poetry-version: ${{ inputs.poetry-version }}
 
       - name: create logs and reports dir
         run: |
           mkdir logs
           mkdir reports
 
-      - name: install packages
-        run: poetry install
-
       - name: run LNbits
         env:
           LNBITS_ADMIN_UI: true
@@ -48,7 +38,6 @@ jobs:
           poetry run lnbits > logs/lnbits.log &
           sleep 5
 
-
       - name: install jmeter
         run: |
           java -version