[AIRFLOW-6442] BigQuery hook - standardize handling http exceptions

[TobKed]

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Link to JIRA issue: https://issues.apache.org/jira/browse/AIRFLOW-6442

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(*) For document-only changes, no JIRA issue is needed. Commit message starts [AIRFLOW-XXXX].

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[codecov-io]

Codecov Report

Merging #7028 into master will decrease coverage by 0.26%.
The diff coverage is 97.29%.

@@            Coverage Diff            @@
##           master   #7028      +/-   ##
=========================================
- Coverage   84.86%   84.6%   -0.27%     
=========================================
  Files         680     680              
  Lines       38644   38642       -2     
=========================================
- Hits        32795   32692     -103     
- Misses       5849    5950     +101

Impacted Files	Coverage Δ
airflow/gcp/hooks/bigquery.py	88.35% <97.29%> (+1.32%)	⬆️
airflow/kubernetes/volume_mount.py	44.44% <0%> (-55.56%)	⬇️
airflow/kubernetes/volume.py	52.94% <0%> (-47.06%)	⬇️
airflow/kubernetes/pod_launcher.py	45.25% <0%> (-46.72%)	⬇️
airflow/kubernetes/refresh_config.py	50.98% <0%> (-23.53%)	⬇️
...rflow/contrib/operators/kubernetes_pod_operator.py	78.75% <0%> (-20%)	⬇️

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