Fix tests on newer versions of Ruby

This is to get the tests green again before taking a deeper look into
the impact of keyword args on Interactor as a whole.

The failures looked something like this:
```
Failure/Error: new(context).tap(&:run).context
  #<#<Class:0x000000010077d5c0> (class)> received :new with unexpected arguments
    expected: ({:foo=>"bar"}) (keyword arguments)
         got: ({:foo=>"bar"}) (options hash)
```

spec/support/lint.rb

@@ -6,7 +6,7 @@
     let(:instance) { double(:instance, context: context) }
 
     it "calls an instance with the given context" do
-      expect(interactor).to receive(:new).once.with(foo: "bar") { instance }
+      expect(interactor).to receive(:new).once.with({foo: "bar"}) { instance }
       expect(instance).to receive(:run).once.with(no_args)
 
       expect(interactor.call(foo: "bar")).to eq(context)
@@ -25,7 +25,7 @@
     let(:instance) { double(:instance, context: context) }
 
     it "calls an instance with the given context" do
-      expect(interactor).to receive(:new).once.with(foo: "bar") { instance }
+      expect(interactor).to receive(:new).once.with({foo: "bar"}) { instance }
       expect(instance).to receive(:run!).once.with(no_args)
 
       expect(interactor.call!(foo: "bar")).to eq(context)
@@ -43,7 +43,7 @@
     let(:context) { double(:context) }
 
     it "initializes a context" do
-      expect(Interactor::Context).to receive(:build).once.with(foo: "bar") { context }
+      expect(Interactor::Context).to receive(:build).once.with({foo: "bar"}) { context }
 
       instance = interactor.new(foo: "bar")