Update Gitaly version to v1.81.0

GITALY_SERVER_VERSION

-1.80.0
+1.81.0

Gemfile

@@ -457,7 +457,7 @@ group :ed25519 do
 end
 
 # Gitaly GRPC protocol definitions
-gem 'gitaly', '~> 1.73.0'
+gem 'gitaly', '~> 1.81.0'
 
 gem 'grpc', '~> 1.24.0'
 

Gemfile.lock

@@ -362,7 +362,7 @@ GEM
       po_to_json (>= 1.0.0)
       rails (>= 3.2.0)
     git (1.5.0)
-    gitaly (1.73.0)
+    gitaly (1.81.0)
       grpc (~> 1.0)
     github-markup (1.7.0)
     gitlab-chronic (0.10.5)
@@ -1211,7 +1211,7 @@ DEPENDENCIES
   gettext (~> 3.2.2)
   gettext_i18n_rails (~> 1.8.0)
   gettext_i18n_rails_js (~> 1.3)
-  gitaly (~> 1.73.0)
+  gitaly (~> 1.81.0)
   github-markup (~> 1.7.0)
   gitlab-chronic (~> 0.10.5)
   gitlab-labkit (= 0.8.0)