Clean up tox ini

dev_requirements.txt

@@ -1,6 +1,6 @@
-black~=20.8b1
-pytest-dbt-adapter~=0.4.0
-pytest~=6.2.2
+black==20.8b1
+pytest-dbt-adapter==0.4.0
+pytest==6.2.2
 tox==3.2.0
-flake8>=3.5.0
+flake8==3.5.0
 certifi==2020.6.20

setup.py

@@ -57,8 +57,8 @@ def _dbt_sqlserver_version():
         ]
     },
     install_requires=[
-        'dbt-core~=0.19.0',
+        "dbt-core>=0.19.0",
         "pyodbc>=4.0.27",
         "azure-identity>=1.4.0",
     ]
-)
+)