Fix ossindex fail(s)

[ERROR] Failed to execute goal org.sonatype.ossindex.maven:ossindex-maven-plugin:3.2.0:audit (audit-dependencies) on project tika-fetcher-gcs: Detected 1 vulnerable components:
[ERROR] io.grpc:grpc-core:jar:1.53.0:compile; https://ossindex.sonatype.org/component/pkg:maven/io.grpc/grpc-core@1.53.0?utm_source=ossindex-client&utm_medium=integration&utm_content=1.8.1
[ERROR] * 1 vulnerability found (6.5); https://ossindex.sonatype.org/vulnerability/sonatype-2021-0818