Fix Security/CompoundHash offences

Library/Homebrew/dependency.rb

@@ -37,7 +37,7 @@ class Dependency
   alias eql? ==
 
   def hash
-    name.hash ^ tags.hash
+    [name, tags].hash
   end
 
   def to_formula

Library/Homebrew/pkg_version.rb

@@ -52,6 +52,6 @@ class PkgVersion
   alias eql? ==
 
   def hash
-    version.hash ^ revision.hash
+    [version, revision].hash
   end
 end

Library/Homebrew/requirement.rb

@@ -122,7 +122,7 @@ class Requirement
   alias eql? ==
 
   def hash
-    name.hash ^ tags.hash
+    [name, tags].hash
   end
 
   sig { returns(String) }