Replace it_should_behave_like with it_behaves_like

rspec-core removed the it_should_behave_like alias in commit
0f6a94ab ("Remove `it_should_behave_like`", merged via
rspec/rspec-core#2864 "Remove deprecations"), so calls to it now
raise NoMethodError under RSpec 4.0.0.beta1. The canonical
it_behaves_like has been the documented form since RSpec 2 and
behaves identically on RSpec 3 and 4, so this is a backwards-
compatible swap.

Convert the only remaining it_should_behave_like in
spec/plsql/procedure_spec.rb (line 62, the VARCHAR/VARCHAR2 shared
example invocation) to it_behaves_like.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: yahonda

spec/plsql/procedure_spec.rb

@@ -59,7 +59,7 @@
 
   ["VARCHAR", "VARCHAR2"].each do |datatype|
     describe "Function with #{datatype} parameters" do
-      it_should_behave_like "Function with string parameters", datatype
+      it_behaves_like "Function with string parameters", datatype
     end
   end