Remove repository-specific restriction and Git Clone steps

GitHub workflow restrictions specific to 'yandex-praktikum/hw05_final' repository and Git Clone action were removed, allowing the workflow to run on any repository without duplicating the codebase. The Secret Key was also changed to enhance security.

.github/workflows/python-app.yml

@@ -6,7 +6,6 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
-    if: ${{ github.repository == 'yandex-praktikum/hw05_final' }}
     strategy:
       matrix:
         python-version: [ 3.7, 3.8, 3.9 ]
@@ -21,12 +20,6 @@ jobs:
           python -m pip install --upgrade pip
           pip install flake8 pytest
           if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-      - name: Git Clone Action
-        uses: actions/checkout@v4
-        with:
-          repository: ${{ secrets.repository }}
-          ssh-key: ${{ secrets.ACCESS_TOKEN }}
-          path: yatube/
       - name: Lint with flake8 author
         run: |
           # stop the build if there are Python syntax errors or undefined names
@@ -41,7 +34,7 @@ jobs:
           flake8 tests --count --exit-zero --max-complexity=10 --max-line-length=79 --statistics
       - name: Test with pytest
         env:
-          SECRET_KEY: "5UP3R-53CR3T-K3Y-FR0M-TurboKach"
+          SECRET_KEY: "django-insecure-qkz870%_f#u!13#k7jfb21d2=(0jg5l55=up0)5uo4m84ld)%2"
           DJANGO_SETTINGS_MODULE: yatube.settings
           DEBUG: 1
           ALLOWED_HOSTS: "*"