From: Daniel Leidert <dleidert@debian.org>
Date: Sat, 28 Jan 2023 17:06:29 +0100
Subject: Fix usage with Psych 4

Since Psych 4 the load() function maps to safe_load(), disallowing to load
Symbols, Dates, Objects, references. This makes samizdat FTBFS.

<https://github.com/ruby/psych/pull/487>

The error message is:

  Psych::DisallowedClass: Tried to load unspecified class <...>.
---
 lib/whitewash.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/whitewash.rb b/lib/whitewash.rb
index fe767f3..8f1f008 100644
--- a/lib/whitewash.rb
+++ b/lib/whitewash.rb
@@ -19,7 +19,7 @@ class Whitewash
 
   if RUBY_VERSION >= '2.0' or RUBY_VERSION < '1.9.3'
     def Whitewash.load(string)
-      YAML.load(string)
+      YAML.unsafe_load(string)
     end
 
   else