fix: Do not use regexp for BigQuerySchemaUtil#isProtoCompatible

[snuyanzin]

The issue with BigQuerySchemaUtil#isProtoCompatible it is appearing in profiler with intensive usage of JsonStreamWriter#append
So the idea is to not use regexp

some measurements with jmh

Benchmark                                     Mode  Cnt       Score       Error   Units
BigQuerySchemaUtilTest.isProtoCompatible     thrpt   10   12607.187 ±    68.760  ops/ms
BigQuerySchemaUtilTest.isProtoCompatibleNew  thrpt   10  174518.753 ± 21791.930  ops/ms

new way is faster
please let me know if I miss anything

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