Bump erlfdb to v1.2.3

https://github.com/apache/couchdb-erlfdb/releases/tag/v1.2.3
diff --git a/rebar.config.script b/rebar.config.script
index 2679e3a..4abdcc9 100644
--- a/rebar.config.script
+++ b/rebar.config.script
@@ -153,7 +153,7 @@
 %% Independent Apps
 {config,           "config",           {tag, "2.1.8"}},
 {b64url,           "b64url",           {tag, "1.0.2"}},
-{erlfdb,           "erlfdb",           {tag, "v1.2.2"}},
+{erlfdb,           "erlfdb",           {tag, "v1.2.3"}},
 {ets_lru,          "ets-lru",          {tag, "1.1.0"}},
 {khash,            "khash",            {tag, "1.1.0"}},
 {snappy,           "snappy",           {tag, "CouchDB-1.0.4"}},