build: Modify rocksdb submodule

Include `<cstdint>` where needed.

Signed-off-by: Adam C. Emerson <aemerson@redhat.com>

diff --git a/src/rocksdb b/src/rocksdb
index 9fa4990159853479a222244574ca41202e4c95c1..24ea35870fe9b3ba15285ec8746ba97ed5d67ff3 160000 (submodule)
--- a/src/rocksdb
+++ b/src/rocksdb
@@ -1 +1 @@
-Subproject commit 9fa4990159853479a222244574ca41202e4c95c1
+Subproject commit 24ea35870fe9b3ba15285ec8746ba97ed5d67ff3