fix: resolve CI/CD test failures and linting issues

tests/conftest.py

@@ -3,7 +3,6 @@
 import pytest
 import tempfile
 import os
-from pathlib import Path
 
 
 @pytest.fixture
@@ -24,43 +23,43 @@ def sample_json():
 @pytest.fixture
 def sample_yaml():
     return """name: test-project
- version: '1.0.0'
+version: '1.0.0'
- debug: true
+debug: true
- database:
+database:
   host: localhost
   port: 5432
   ssl: false
- tags:
+tags:
   - python
   - cli
- """
+"""
 
 
 @pytest.fixture
 def sample_toml():
     return """name = "test-project"
- version = "1.0.0"
+version = "1.0.0"
- debug = true
+debug = true
 
- [database]
+[database]
- host = "localhost"
+host = "localhost"
- port = 5432
+port = 5432
- ssl = false
+ssl = false
 
- tags = ["python", "cli"]
+tags = ["python", "cli"]
- """
+"""
 
 
 @pytest.fixture
 def sample_env():
     return """NAME=test-project
- VERSION=1.0.0
+VERSION=1.0.0
- DEBUG=true
+DEBUG=true
- DATABASE_HOST=localhost
+DATABASE_HOST=localhost
- DATABASE_PORT=5432
+DATABASE_PORT=5432
- DATABASE_SSL=false
+DATABASE_SSL=false
- TAGS=python,cli
+TAGS=python,cli
- """
+"""
 
 
 @pytest.fixture