[rubygems/rubygems] Use String#unpack1 available since ruby 3.0

https://github.com/rubygems/rubygems/commit/46258d6cb4

1 files changed, 1 insertions, 2 deletions

diff --git a/lib/bundler/checksum.rb b/lib/bundler/checksum.rb
index 163eac458e..de9a74cf70 100644
--- a/lib/bundler/checksum.rb
+++ b/lib/bundler/checksum.rb
@@ -43,8 +43,7 @@ module Bundler
         return digest if digest.match?(/\A[0-9a-f]{64}\z/i)
         if digest.match?(%r{\A[-0-9a-z_+/]{43}={0,2}\z}i)
           digest = digest.tr("-_", "+/") # fix urlsafe base64
-          # transform to hex. Use unpack1 when we drop older rubies
-          return digest.unpack("m0").first.unpack("H*").first
+          return digest.unpack1("m0").unpack1("H*")
         end
         raise ArgumentError, "#{digest.inspect} is not a valid SHA256 hex or base64 digest"
       end