chore(deps): update dependency pyarrow to v4 (GoogleCloudPlatform#5750)

Co-authored-by: Dan Lee <[email protected]>

Author: renovate-bot

bigquery/bqml/requirements.txt

@@ -2,6 +2,6 @@ google-cloud-bigquery[pandas,bqstorage]==2.16.0
 google-cloud-bigquery-storage==2.4.0
 pandas==1.1.5; python_version < '3.7'
 pandas==1.2.0; python_version > '3.6'
-pyarrow==3.0.0
+pyarrow==4.0.0
 flaky==3.7.0
 mock==4.0.3

bigquery/datalab-migration/requirements.txt

@@ -4,4 +4,4 @@ google-cloud-bigquery-storage==2.4.0
 datalab==1.2.0
 ipython==7.18.1; python_version > '3.6'
 ipython==7.16.1; python_version < '3.7'
-pyarrow==3.0.0
+pyarrow==4.0.0

bigquery/pandas-gbq-migration/requirements.txt

@@ -4,5 +4,5 @@ pandas==1.1.5; python_version < '3.7'
 pandas==1.2.4; python_version > '3.6'
 pandas-gbq==0.15.0; python_version > '3.6'
 pandas-gbq==0.14.1; python_version < '3.7'
-pyarrow==3.0.0
+pyarrow==4.0.0
 grpcio==1.37.1

data-science-onramp/data-cleaning/requirements-test.txt

@@ -2,4 +2,4 @@ pytest==6.2.1
 pandas==1.1.5; python_version < '3.7'
 pandas==1.2.0; python_version > '3.6'
 google-cloud-bigquery==2.16.0
-pyarrow==3.0.0
+pyarrow==4.0.0