Drop base64 gem dependency (#51)

Author: Earlopain

lib/protocol/http/header/authorization.rb

@@ -3,8 +3,6 @@
 # Released under the MIT License.
 # Copyright, 2019-2023, by Samuel Williams.
 
-require 'base64'
-
 module Protocol
 	module HTTP
 		module Header
@@ -21,10 +19,10 @@ def credentials
 				end
 
 				def self.basic(username, password)
-					encoded = "#{username}:#{password}"
+					strict_base64_encoded = ["#{username}:#{password}"].pack('m0')
 
 					self.new(
-						"Basic #{Base64.strict_encode64(encoded)}"
+						"Basic #{strict_base64_encoded}"
 					)
 				end
 			end

protocol-http.gemspec

@@ -22,6 +22,4 @@ Gem::Specification.new do |spec|
 	spec.files = Dir.glob(['{lib}/**/*', '*.md'], File::FNM_DOTMATCH, base: __dir__)
 
 	spec.required_ruby_version = ">= 3.0"
-	
-	spec.add_dependency "base64"
 end