build(deps): update dependency org.apache.maven.plugins:maven-dependency-plugin to v3.6.1

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.apache.maven.plugins:maven-dependency-plugin	3.5.0 -> 3.6.1

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[alicejli]

Failing java-bigquery downstream dependencies:

Error:  Used undeclared dependencies found:
Error:     com.google.auth:google-auth-library-credentials:jar:1.16.0:compile

Failing java-bigqueryconnection downstream dependencies:

Error:  Used undeclared dependencies found:
Error:     com.google.http-client:google-http-client:jar:1.42.2:compile
Error:  Non-test scoped test only dependencies found:
Error:     com.google.http-client:google-http-client:jar:1.42.2:compile

[diegomarquezp]

There are failing downstream checks - tracked in #778