Update dependency nanoc to v4.12.20

Gemfile.lock

@@ -1,15 +1,17 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.8.5)
+    addressable (2.8.6)
       public_suffix (>= 2.0.2, < 6.0)
+    base64 (0.2.0)
+    coderay (1.1.3)
     colorator (1.1.0)
     colored (1.2)
     concurrent-ruby (1.1.10)
     cri (2.15.11)
     ddmetrics (1.0.1)
     ddplugin (1.0.3)
-    diff-lcs (1.5.0)
+    diff-lcs (1.5.1)
     em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0)
@@ -53,25 +55,28 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.10)
     memo_wise (1.7.0)
     mercenary (0.3.6)
-    nanoc (4.12.19)
+    method_source (1.0.0)
+    nanoc (4.12.20)
       addressable (~> 2.5)
       colored (~> 1.2)
       nanoc-checking (~> 1.0, >= 1.0.2)
-      nanoc-cli (= 4.12.19)
-      nanoc-core (= 4.12.19)
+      nanoc-cli (= 4.12.20)
+      nanoc-core (= 4.12.20)
       nanoc-deploying (~> 1.0)
       parallel (~> 1.12)
       tty-command (~> 0.8)
       tty-which (~> 0.4)
-    nanoc-checking (1.0.2)
-      nanoc-cli (~> 4.12, >= 4.12.4)
-      nanoc-core (~> 4.12, >= 4.12.4)
-    nanoc-cli (4.12.19)
+    nanoc-checking (1.0.3)
+      nanoc-cli (~> 4.12, >= 4.12.5)
+      nanoc-core (~> 4.12, >= 4.12.5)
+    nanoc-cli (4.12.20)
       cri (~> 2.15)
       diff-lcs (~> 1.3)
-      nanoc-core (= 4.12.19)
+      nanoc-core (= 4.12.20)
+      pry
       zeitwerk (~> 2.1)
-    nanoc-core (4.12.19)
+    nanoc-core (4.12.20)
+      base64 (~> 0.2)
       concurrent-ruby (~> 1.1)
       ddmetrics (~> 1.0)
       ddplugin (~> 1.0)
@@ -91,6 +96,9 @@ GEM
       tty-color (~> 0.5)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
+    pry (0.14.2)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
     psych (4.0.6)
       stringio
     public_suffix (5.0.4)
@@ -104,7 +112,7 @@ GEM
     safe_yaml (1.0.5)
     sassc (2.4.0)
       ffi (~> 1.9)
-    set (1.0.3)
+    set (1.0.4)
     slow_enumerator_tools (1.1.0)
     sorted_set (1.0.3)
       rbtree
@@ -120,7 +128,7 @@ GEM
     tty-which (0.5.0)
     unicode-display_width (1.8.0)
     webrick (1.8.1)
-    zeitwerk (2.6.12)
+    zeitwerk (2.6.13)
 
 PLATFORMS
   x86_64-linux