Add an initial Gemfile.lock and pin nanoc version.

.bundle/config

@@ -0,0 +1,2 @@
+---
+BUNDLE_PATH: "vendor/bundle"

Gemfile

@@ -2,4 +2,4 @@
 
 source 'https://rubygems.org'
 
-gem 'nanoc', '~> 4.12'
+gem 'nanoc', '4.12'

Gemfile.lock

@@ -0,0 +1,72 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.8.5)
+      public_suffix (>= 2.0.2, < 6.0)
+    colored (1.2)
+    concurrent-ruby (1.2.2)
+    cri (2.15.11)
+    ddmemoize (1.0.0)
+      ddmetrics (~> 1.0)
+      ref (~> 2.0)
+    ddmetrics (1.1.0)
+    ddplugin (1.0.3)
+    diff-lcs (1.5.0)
+    hamster (3.0.0)
+      concurrent-ruby (~> 1.0)
+    json_schema (0.21.0)
+    nanoc (4.12.0)
+      addressable (~> 2.5)
+      colored (~> 1.2)
+      nanoc-checking (~> 1.0)
+      nanoc-cli (= 4.12.0)
+      nanoc-core (= 4.12.0)
+      nanoc-deploying (~> 1.0)
+      parallel (~> 1.12)
+      tty-command (~> 0.8)
+      tty-which (~> 0.4)
+    nanoc-checking (1.0.1)
+      nanoc-cli (~> 4.11, >= 4.11.15)
+      nanoc-core (~> 4.11, >= 4.11.15)
+    nanoc-cli (4.12.0)
+      cri (~> 2.15)
+      diff-lcs (~> 1.3)
+      nanoc-core (= 4.12.0)
+      zeitwerk (~> 2.1)
+    nanoc-core (4.12.0)
+      concurrent-ruby (~> 1.1)
+      ddmemoize (~> 1.0)
+      ddmetrics (~> 1.0)
+      ddplugin (~> 1.0)
+      hamster (~> 3.0)
+      json_schema (~> 0.19)
+      slow_enumerator_tools (~> 1.0)
+      tomlrb (~> 1.2)
+      tty-platform (~> 0.2)
+      zeitwerk (~> 2.1)
+    nanoc-deploying (1.0.2)
+      nanoc-checking (~> 1.0)
+      nanoc-cli (~> 4.11, >= 4.11.15)
+      nanoc-core (~> 4.11, >= 4.11.15)
+    parallel (1.23.0)
+    pastel (0.8.0)
+      tty-color (~> 0.5)
+    public_suffix (5.0.4)
+    ref (2.0.0)
+    slow_enumerator_tools (1.1.0)
+    tomlrb (1.3.0)
+    tty-color (0.6.0)
+    tty-command (0.10.1)
+      pastel (~> 0.8)
+    tty-platform (0.3.0)
+    tty-which (0.5.0)
+    zeitwerk (2.6.12)
+
+PLATFORMS
+  x86_64-linux
+
+DEPENDENCIES
+  nanoc (= 4.12)
+
+BUNDLED WITH
+   2.4.22