Update gitlab-experiment to 0.4.4

- The only thing in this release is a fix for a deprecation warning
around kwargs.

Gemfile

@@ -479,7 +479,7 @@ gem 'flipper', '~> 0.17.1'
 gem 'flipper-active_record', '~> 0.17.1'
 gem 'flipper-active_support_cache_store', '~> 0.17.1'
 gem 'unleash', '~> 0.1.5'
-gem 'gitlab-experiment', '~> 0.4.3'
+gem 'gitlab-experiment', '~> 0.4.4'
 
 # Structured logging
 gem 'lograge', '~> 0.5'

Gemfile.lock

@@ -427,7 +427,7 @@ GEM
     github-markup (1.7.0)
     gitlab-chronic (0.10.5)
       numerizer (~> 0.2)
-    gitlab-experiment (0.4.3)
+    gitlab-experiment (0.4.4)
       activesupport (>= 3.0)
       scientist (~> 1.5, >= 1.5.0)
     gitlab-fog-azure-rm (1.0.0)
@@ -1357,7 +1357,7 @@ DEPENDENCIES
   gitaly (~> 13.7.0.pre.rc1)
   github-markup (~> 1.7.0)
   gitlab-chronic (~> 0.10.5)
-  gitlab-experiment (~> 0.4.3)
+  gitlab-experiment (~> 0.4.4)
   gitlab-fog-azure-rm (~> 1.0)
   gitlab-labkit (= 0.13.3)
   gitlab-license (~> 1.0)