Replace be_true' matchers with be true' in specs

spec/producer/core/task/dsl_spec.rb

@@ -61,7 +61,7 @@ module Producer::Core
       end
 
       it 'assigns true as the condition' do
-        expect(dsl.instance_eval { @condition }).to be_true
+        expect(dsl.instance_eval { @condition }).to be true
       end
     end
 

spec/producer/core/task_spec.rb

@@ -46,8 +46,8 @@ module Producer::Core
           expect(task.actions).to be_empty
         end
 
-        it 'assigns a truthy condition' do
-          expect(task.condition).to be_true
+        it 'assigns a true condition' do
+          expect(task.condition).to be true
         end
       end
     end