Update dependency pyarrow to v26

Author: renovate-bot

bigquery/bqml/requirements.txt

@@ -2,6 +2,6 @@ google-cloud-bigquery[pandas,bqstorage]==3.27.0
 google-cloud-bigquery-storage==2.27.0
 pandas==2.0.3; python_version == '3.8'
 pandas==2.2.3; python_version > '3.8'
-pyarrow==24.0.0
+pyarrow==26.0.0
 flaky==3.8.1
 mock==5.1.0

bigquery/pandas-gbq-migration/requirements.txt

@@ -5,4 +5,4 @@ pandas==2.2.3; python_version > '3.8'
 pandas-gbq==0.24.0
 grpcio==1.70.0; python_version == '3.8'
 grpcio==1.74.0; python_version > '3.8'
-pyarrow==24.0.0
+pyarrow==26.0.0

bigquery_storage/to_dataframe/requirements.txt

@@ -2,7 +2,7 @@ google-auth==2.40.3
 google-cloud-bigquery-storage==2.32.0
 google-cloud-bigquery==3.30.0; python_version <= '3.8'
 google-cloud-bigquery==3.35.1; python_version >= '3.9'
-pyarrow==24.0.0
+pyarrow==26.0.0
 ipython==7.31.1; python_version == '3.7'
 ipython==8.10.0; python_version == '3.8'
 ipython==8.18.1; python_version == '3.9'