Pin Middleman to ~> 4.6 and update lockfile

Regenerate Gemfile.lock for multiple platforms. Bump
middleman-livereload to 3.5.0 and rack-livereload to 0.6.1. Add
platform-specific gem variants (ffi, nokogiri, tailwindcss-ruby, etc.)
and adjust rack version constraints.

Author: thibaudgg

Gemfile

@@ -2,7 +2,7 @@ source 'https://rubygems.org'
 
 gem 'ostruct' # Required for Ruby 4.0+
 
-gem 'middleman'
+gem 'middleman', '~> 4.6'
 
 gem 'middleman-inline_svg'
 gem 'middleman-livereload'

Gemfile.lock

@@ -35,9 +35,14 @@ GEM
     execjs (2.10.0)
     fast_blank (1.0.1)
     fastimage (2.4.0)
-    ffi (1.17.3)
+    ffi (1.17.3-aarch64-linux-gnu)
+    ffi (1.17.3-aarch64-linux-musl)
+    ffi (1.17.3-arm-linux-gnu)
+    ffi (1.17.3-arm-linux-musl)
     ffi (1.17.3-arm64-darwin)
+    ffi (1.17.3-x86_64-darwin)
     ffi (1.17.3-x86_64-linux-gnu)
+    ffi (1.17.3-x86_64-linux-musl)
     haml (7.2.0)
       temple (>= 0.8.2)
       thor
@@ -94,23 +99,31 @@ GEM
     middleman-inline_svg (0.1.2)
       middleman-core (>= 3.4.1)
       nokogiri (>= 1.8)
-    middleman-livereload (3.4.7)
+    middleman-livereload (3.5.0)
       em-websocket (~> 0.5.1)
       middleman-core (>= 3.3)
-      rack-livereload (~> 0.3.15)
+      rack-livereload (~> 0.6.1)
     middleman-robots (1.3.7)
       middleman-cli (~> 4.0)
       middleman-core (~> 4.0)
-    mini_portile2 (2.8.9)
     minitest (6.0.1)
       prism (~> 1.5)
-    nokogiri (1.19.0)
-      mini_portile2 (~> 2.8.2)
+    nokogiri (1.19.0-aarch64-linux-gnu)
+      racc (~> 1.4)
+    nokogiri (1.19.0-aarch64-linux-musl)
+      racc (~> 1.4)
+    nokogiri (1.19.0-arm-linux-gnu)
+      racc (~> 1.4)
+    nokogiri (1.19.0-arm-linux-musl)
       racc (~> 1.4)
     nokogiri (1.19.0-arm64-darwin)
       racc (~> 1.4)
+    nokogiri (1.19.0-x86_64-darwin)
+      racc (~> 1.4)
     nokogiri (1.19.0-x86_64-linux-gnu)
       racc (~> 1.4)
+    nokogiri (1.19.0-x86_64-linux-musl)
+      racc (~> 1.4)
     ostruct (0.6.3)
     padrino-helpers (0.15.3)
       i18n (>= 0.6.7, < 2)
@@ -122,9 +135,9 @@ GEM
     prism (1.9.0)
     public_suffix (7.0.2)
     racc (1.8.1)
-    rack (3.2.4)
-    rack-livereload (0.3.17)
-      rack
+    rack (3.1.19)
+    rack-livereload (0.6.1)
+      rack (>= 3.0, < 3.2)
     rackup (2.3.1)
       rack (>= 3)
     rb-fsevent (0.11.2)
@@ -136,8 +149,12 @@ GEM
     securerandom (0.4.1)
     servolux (0.13.0)
     tailwindcss-ruby (4.1.18)
+    tailwindcss-ruby (4.1.18-aarch64-linux-gnu)
+    tailwindcss-ruby (4.1.18-aarch64-linux-musl)
     tailwindcss-ruby (4.1.18-arm64-darwin)
+    tailwindcss-ruby (4.1.18-x86_64-darwin)
     tailwindcss-ruby (4.1.18-x86_64-linux-gnu)
+    tailwindcss-ruby (4.1.18-x86_64-linux-musl)
     temple (0.10.4)
     thor (1.5.0)
     tilt (2.7.0)
@@ -151,12 +168,18 @@ GEM
     webrick (1.9.2)
 
 PLATFORMS
-  arm64-darwin-25
-  ruby
+  aarch64-linux-gnu
+  aarch64-linux-musl
+  arm-linux-gnu
+  arm-linux-musl
+  arm64-darwin
+  x86_64-darwin
   x86_64-linux
+  x86_64-linux-gnu
+  x86_64-linux-musl
 
 DEPENDENCIES
-  middleman
+  middleman (~> 4.6)
   middleman-inline_svg
   middleman-livereload
   middleman-robots