fix(tests): Ruby 3 compatibility for RSpec suite

RSpec tests under Ruby 3 were broken by ambiguous arguments.
This patch fixes the test suite under Ruby 3 and is backward compatible.

Discussion on this issue can be found in rspec repo:
rspec/rspec-mocks#1460

Signed-off-by: Andrew Bobulsky <rulerof@gmail.com>

spec/kitchen/driver/aws/instance_generator_spec.rb

@@ -209,12 +209,14 @@
       it "generates id from the provided tag" do
         allow(::Aws::EC2::Client).to receive(:new).and_return(ec2_stub)
         expect(ec2_stub).to receive(:describe_subnets).with(
-          filters: [
-            {
-              name: "tag:foo",
-              values: ["bar"],
-            },
-          ]
+          {
+            filters: [
+              {
+                name: "tag:foo",
+                values: ["bar"],
+              },
+            ]
+          }
         ).and_return(ec2_stub.describe_subnets)
         expect(generator.ec2_instance_data[:subnet_id]).to eq("s-123")
       end
@@ -240,16 +242,18 @@
       it "generates id from the provided tag" do
         allow(::Aws::EC2::Client).to receive(:new).and_return(ec2_stub)
         expect(ec2_stub).to receive(:describe_security_groups).with(
-          filters: [
-            {
-              name: "tag:foo",
-              values: ["bar"],
-            },
-            {
-              name: "vpc-id",
-              values: ["vpc-456"],
-            },
-          ]
+          {
+            filters: [
+              {
+                name: "tag:foo",
+                values: ["bar"],
+              },
+              {
+                name: "vpc-id",
+                values: ["vpc-456"],
+              },
+            ]
+          }
         ).and_return(ec2_stub.describe_security_groups)
         expect(generator.ec2_instance_data[:security_group_ids]).to eq(["sg-123"])
       end
@@ -287,16 +291,18 @@
       it "generates id from the provided tag" do
         allow(::Aws::EC2::Client).to receive(:new).and_return(ec2_stub_whithout_security_group)
         expect(ec2_stub_whithout_security_group).to receive(:describe_security_groups).with(
-          filters: [
-            {
-              name: "tag:foo",
-              values: ["bar"],
-            },
-            {
-              name: "vpc-id",
-              values: ["vpc-456"],
-            },
-          ]
+          {
+            filters: [
+              {
+                name: "tag:foo",
+                values: ["bar"],
+              },
+              {
+                name: "vpc-id",
+                values: ["vpc-456"],
+              },
+            ]
+          }
         ).and_return(ec2_stub_whithout_security_group.describe_security_groups)
 
         expect { generator.ec2_instance_data }.to raise_error(