Update dependency nokogiri to v1.18.7

Author: renovate[bot]

Diff for: Gemfile.lock

@@ -131,7 +131,7 @@ GEM
     multi_xml (0.7.1)
       bigdecimal (~> 3.1)
     multipart-post (2.1.1)
-    nokogiri (1.18.6)
+    nokogiri (1.18.7)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     octokit (4.20.0)

Diff for: src-api/Gemfile.lock

@@ -83,7 +83,7 @@ GEM
       rouge (~> 3.2)
     mini_portile2 (2.8.8)
     minitest (5.24.1)
-    nokogiri (1.18.6)
+    nokogiri (1.18.7)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     padrino-helpers (0.15.3)