test: fix failing tests and lint

Signed-off-by: Arjun Rajappa <arjun.rajappa@ibm.com>

Author: arjun-rajappa

lib/instana/trace/span.rb

@@ -83,13 +83,13 @@ def add_stack(limit: 30, stack: Kernel.caller)
 
       @attributes[:stack] = stack
                             .map do |call|
-        file, line, *method = call.split(':')
+                              file, line, *method = call.split(':')
 
-        {
-          c: file,
-          n: line,
-          m: method.join(' ')
-        }
+                              {
+                                c: file,
+                                n: line,
+                                m: method.join(' ')
+                              }
       end.take(limit > 40 ? 40 : limit)
     end
 

test/instrumentation/rest_client_test.rb

@@ -7,7 +7,7 @@
 class RestClientTest < Minitest::Test
   def setup
     # See https://github.com/rest-client/rest-client/issues/612
-    OpenSSL::SSL::SSLContext::DEFAULT_PARAMS[:ciphers] = OpenSSL::SSL::SSLContext.new.ciphers
+    OpenSSL::SSL::SSLContext::DEFAULT_PARAMS[:ciphers] = OpenSSL::SSL::SSLContext.new.ciphers if Gem::Version.new(RUBY_VERSION) < Gem::Version.new('4.0')
   end
 
   def teardown