[VL] Daily Update Velox Version (2024_08_19) (#6910)

Velox Changes:
```
54b16e041 by Ke Wang, Refactor WriterOptions processConfigs function (10762)
2b7f559a4 by Pedro Eugenio Rocha Pedreira, Fix std::shared_mutex missing includes (10772)
6b9806069 by xiaoxmeng, Fix flaky FileInputStreamTest.stats (10771)
7fd6273e5 by Chengcheng Jin, Move decimal-to-string API to DecimalUtil (10477)
d23dde5aa by Wei He, Avoid generating unsupported data types for JoinFuzzer with PQR (10662)
d805d31a0 by Jialiang Tan, Apply grow target adjustment to reduce arbitration count (10170)
e7ffae924 by xiaoxmeng, Remove byte input stream legacy code (10761)
44fb107d0 by Wei He, Use ASSERT_STREQ when comparing C-strings (10759)
c701f8308 by Satadru Pan, Match Velox hmac_sha/md5 functions behavior with Java on empty keys (10744)
d08d69469 by xiaoxmeng, Some window operator code cleanup (10764)
bc274f2a8 by Bikramjeet Vig, Ensure flattening an array or map does not result in an oversized values vector (10760)
```
Signed-off-by: glutenperfbot <[email protected]>
Co-authored-by: glutenperfbot <[email protected]>

ep/build-velox/src/get_velox.sh

@@ -17,7 +17,7 @@
 set -exu
 
 VELOX_REPO=https://github.com/oap-project/velox.git
-VELOX_BRANCH=2024_08_16
+VELOX_BRANCH=2024_08_19
 VELOX_HOME=""
 
 OS=`uname -s`