Upgrade camshaft to 0.46.0

This version of camshaft requires a CDB_CheckAnalysisQuota function
to check analysis cache quota.

test/support/sql/cdb_analysis_check.sql

@@ -0,0 +1,6 @@
+CREATE OR REPLACE FUNCTION CDB_CheckAnalysisQuota(table_name TEXT)
+RETURNS void AS
+$$
+BEGIN
+END;
+$$ LANGUAGE PLPGSQL;