chore(gradle): bump org.apache.arrow.adbc:adbc-driver-flight-sql from 0.15.0 to 0.16.0 (deephaven#6596)

Bumps org.apache.arrow.adbc:adbc-driver-flight-sql from 0.15.0 to 0.16.0.

---
updated-dependencies:
- dependency-name: org.apache.arrow.adbc:adbc-driver-flight-sql
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-adbc = "0.15.0"
+adbc = "0.16.0"
 airlift = "2.0.2"
 arrow = "18.0.0"
 autoservice = "1.1.1"