fix(deps): upgrade gems

pact_broker/Gemfile.lock

@@ -66,9 +66,9 @@ GEM
     multi_xml (0.6.0)
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
-    mysql2 (0.5.3)
+    mysql2 (0.5.4)
     nio4r (2.5.8)
-    nokogiri (1.13.4)
+    nokogiri (1.13.6)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     pact-support (1.17.0)
@@ -108,7 +108,7 @@ GEM
       thor (~> 1.0)
     padrino-support (0.15.1)
     parslet (2.0.0)
-    pg (1.3.4)
+    pg (1.3.5)
     puma (5.6.4)
       nio4r (~> 2.0)
     racc (1.6.0)
@@ -137,7 +137,7 @@ GEM
     semantic_logger (4.10.0)
       concurrent-ruby (~> 1.0)
     semver2 (3.4.2)
-    sequel (5.55.0)
+    sequel (5.56.0)
     sinatra (2.2.0)
       mustermann (~> 1.0)
       rack (~> 2.2)
@@ -153,7 +153,7 @@ GEM
       tins (~> 1.0)
     thor (1.2.1)
     tilt (2.0.10)
-    tins (1.31.0)
+    tins (1.31.1)
       sync
     uber (0.1.0)
     webmachine (1.6.0)