chore(deps): update dependency connection_pool to v2.5.4

Author: renovate[bot]

Gemfile.lock

@@ -167,7 +167,7 @@ GEM
     chunky_png (1.4.0)
     coderay (1.1.3)
     concurrent-ruby (1.3.5)
-    connection_pool (2.5.3)
+    connection_pool (2.5.4)
     cose (1.3.1)
       cbor (~> 0.5.9)
       openssl-signature_algorithm (~> 1.0)