[GLUTEN-6887][VL] Daily Update Velox Version (dft-2026_05_29) (#12189)

Upstream Velox's New Commits:
56aeca898 by Xiao Du, feat: Add PforEncoding (Patched FOR for data with rare outliers) (#17622)
4d779dd53 by Rui Mo, feat: Add Arrow bridge support for `TimestampUtcType` (#17116)
e026f6865 by Hongze Zhang, fix: Guard overflow access on LongDecimalType::kMaxPrecision (#17594)
f5b14a94a by Masha Basmanova, misc: Add @PingLiuPing as code owner for Parquet and Connectors (#17651)
dd3c27233 by Sungwoo Chang, feat: Add CustomMemoryResource and custom memory extension framework (#17529)
1dd9012d7 by Ke Wang, refactor(velox): Move Lemire FastPFor bitpacking library out of tests (#17639)

Signed-off-by: glutenperfbot <glutenperfbot@glutenproject-internal.com>
Co-authored-by: glutenperfbot <glutenperfbot@glutenproject-internal.com>
Co-authored-by: Yuan <yuanzhou@apache.org>

Author: 3 people

ep/build-velox/src/get-velox.sh

@@ -18,8 +18,8 @@ set -exu
 
 CURRENT_DIR=$(cd "$(dirname "$BASH_SOURCE")"; pwd)
 VELOX_REPO=https://github.com/IBM/velox.git
-VELOX_BRANCH=dft-2026_05_28
-VELOX_ENHANCED_BRANCH=ibm-2026_05_28
+VELOX_BRANCH=dft-2026_05_29
+VELOX_ENHANCED_BRANCH=ibm-2026_05_29
 VELOX_HOME=""
 RUN_SETUP_SCRIPT=ON
 ENABLE_ENHANCED_FEATURES=OFF