rocksdb: upgrade submodule to v7.10.2 to address CVE-2022-23476

This commit upgrades the rocksdb submodule from v7.9.2 to v7.10.2 to
address CVE-2022-23476, a security vulnerability in the Nokogiri gem
used by RocksDB's documentation build system.

CVE-2022-23476 Details:
- Affects: RocksDB versions < 7.10.2
- Issue: Unchecked return value from xmlTextReaderExpand in Nokogiri
- Fix commit: 6648dec0a3eee0a329af8342038ce099baa55122
- Fixed in: Nokogiri 1.13.10, included in RocksDB v7.10.2

The vulnerability was fixed in the upstream facebook/rocksdb repository
on December 8, 2022, and included in the v7.10.2 release. The v7.9.2
version currently used by Ceph does not contain this fix, as the 7.9.x
branch diverged before the security patch was applied.

Analysis confirmed that:
- Current Ceph RocksDB: v7.9.2 (commit 24ea35870fe9b3ba15285ec8746ba97ed5d67ff3)
- CVE fix present in v7.9.2: NO
- First version with fix: v7.10.2 (commit 9107c1059b4656513ae0d51e8976e4f69f59a9c3)

References:
- CVE-2022-23476: https://nvd.nist.gov/vuln/detail/CVE-2022-23476
- Nokogiri Advisory: GHSA-qv4q-mr5r-qprj
- Fix commit: facebook/rocksdb@6648dec

also, in this change, we adapt BinnedLRUCache to CacheItemHelper API.
rocksdb 7.10 reshaped `rocksdb::Cache`, so we have to update our
overrides accordingly to address the build failure. the check for
RocksDB version is dropped, as mainstream distros ship RocksDB >=
7.10.2 at the time of writing:

- alpine 3.23:    10.9.1
- fedora 44:      10.2.1
- debian stable:   9.10.0
- ubuntu nobel:    8.9.1
- ubuntu resolute: 9.11.2

Signed-off-by: Justin Caratzas <jcaratza@ibm.com>
Signed-off-by: Kefu Chai <k.chai@proxmox.com>