Add x86_64-linux platform to Gemfile.lock for GitHub Actions compatibility

Author: tompollard

Gemfile.lock

@@ -45,7 +45,7 @@ GEM
       logger
     faraday-net_http (3.4.0)
       net-http (>= 0.5.0)
-    ffi (1.17.2-arm64-darwin)
+    ffi (1.17.2)
     forwardable-extended (2.6.0)
     gemoji (4.1.0)
     github-pages (232)
@@ -232,14 +232,16 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.10)
     logger (1.6.6)
     mercenary (0.3.6)
+    mini_portile2 (2.8.8)
     minima (2.5.1)
       jekyll (>= 3.5, < 5.0)
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
     minitest (5.25.5)
     net-http (0.6.0)
       uri
-    nokogiri (1.18.8-arm64-darwin)
+    nokogiri (1.18.8)
+      mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     octokit (4.25.1)
       faraday (>= 1, < 3)
@@ -278,6 +280,7 @@ GEM
 
 PLATFORMS
   arm64-darwin-21
+  x86_64-linux
 
 DEPENDENCIES
   github-pages