deps: fix minimum ibis-framework dependency

As of ibis-bigquery 2.0.0, only ibis-framework 2.0.0+ is supported.

Author: tswast

setup.py

@@ -44,7 +44,7 @@
     packages=setuptools.find_packages(),
     python_requires=">=3.7",
     install_requires=[
-        "ibis-framework >=1.2.0,<3.0.0dev",
+        "ibis-framework >=2.0.0,<3.0.0dev",
         "google-cloud-bigquery >=1.12.0,<3.0.0dev",
         "google-cloud-bigquery-storage >=1.0.0,<3.0.0dev",
         "pyarrow >=1.0.0,<7.0.0dev",