Update dependency hiredis-client to v0.26.4 (#37610)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Gemfile.lock

@@ -305,8 +305,8 @@ GEM
     highline (3.1.2)
       reline
     hiredis (0.6.3)
-    hiredis-client (0.26.3)
-      redis-client (= 0.26.3)
+    hiredis-client (0.26.4)
+      redis-client (= 0.26.4)
     hkdf (0.3.0)
     htmlentities (4.3.4)
     http (5.3.1)
@@ -708,7 +708,7 @@ GEM
       reline
     redcarpet (3.6.1)
     redis (4.8.1)
-    redis-client (0.26.3)
+    redis-client (0.26.4)
       connection_pool
     regexp_parser (2.11.3)
     reline (0.6.3)