Fixed TypeError when run tests with sanitizer
```$ ya make -r --sanitize=undefined -tt extsearch/geo/meta/tests/blackbox```
```TypeError: cannot use a string pattern on a bytes-like object```
@@ -26,7 +26,7 @@ from . import environment
MAX_OUT_LEN = 1000 * 1000 # 1 mb
MAX_MESSAGE_LEN = 1500
-SANITIZER_ERROR_PATTERN = r": ([A-Z][\w]+Sanitizer)"
+SANITIZER_ERROR_PATTERN = br": ([A-Z][\w]+Sanitizer)"
GLIBC_PATTERN = re.compile(r"\S+@GLIBC_([0-9.]+)")
yatest_logger = logging.getLogger("ya.test")
