deps: update dependency com.google.apis:google-api-services-bigquery to v2-rev20191211-1.30.8

[renovate-bot]

This PR contains the following updates:

Package	Update	Change
com.google.apis:google-api-services-bigquery	patch	v2-rev20191211-1.30.3 -> v2-rev20191211-1.30.8

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[codecov]

Codecov Report

Merging #161 into master will increase coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #161      +/-   ##
============================================
+ Coverage     77.37%   77.39%   +0.02%     
+ Complexity     1110     1109       -1     
============================================
  Files            73       73              
  Lines          5922     5914       -8     
  Branches        635      631       -4     
============================================
- Hits           4582     4577       -5     
- Misses         1011     1012       +1     
+ Partials        329      325       -4

Impacted Files	Coverage Δ	Complexity Δ
...com/google/cloud/bigquery/StandardSQLDataType.java	73.68% <0%> (-1.32%)	7% <0%> (ø)
...m/google/cloud/bigquery/StandardSQLStructType.java	84.61% <0%> (-1.1%)	5% <0%> (ø)
...ava/com/google/cloud/bigquery/RoutineArgument.java	85.71% <0%> (-0.65%)	5% <0%> (ø)
...google/cloud/bigquery/ExternalTableDefinition.java	56.38% <0%> (-0.46%)	16% <0%> (ø)
...va/com/google/cloud/bigquery/StandardSQLField.java	90.47% <0%> (-0.44%)	7% <0%> (ø)
...java/com/google/cloud/bigquery/ViewDefinition.java	87.09% <0%> (-0.41%)	11% <0%> (ø)
...y/src/main/java/com/google/cloud/bigquery/Job.java	84.67% <0%> (-0.23%)	32% <0%> (-1%)
...om/google/cloud/bigquery/BigtableColumnFamily.java	95.83% <0%> (-0.17%)	5% <0%> (ø)
.../google/cloud/bigquery/spi/v2/HttpBigQueryRpc.java	5.2% <0%> (-0.04%)	2% <0%> (ø)
...ain/java/com/google/cloud/bigquery/Clustering.java	100% <0%> (ø)	5% <0%> (ø)	⬇️
... and 11 more

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