Bump ameba dependency and fix found issues

.ameba.yml

@@ -0,0 +1,3 @@
+Lint/NotNil:
+  Excluded:
+    - spec/backtracer/backtrace/frame/parser_spec.cr

shard.yml

@@ -7,7 +7,7 @@ authors:
 development_dependencies:
   ameba:
     github: crystal-ameba/ameba
-    version: ~> 1.2.0
+    version: ~> 1.4.0
 
 crystal: ">= 0.35.0"
 

spec/backtracer/backtrace/frame/context_spec.cr

@@ -1,6 +1,6 @@
 require "../../../spec_helper"
 
-def with_foo_context
+def with_foo_context(&)
   yield Backtracer::Backtrace::Frame::Context.new(
     lineno: 10,
     pre: %w[foo bar baz],

spec/spec_helper.cr

@@ -1,15 +1,15 @@
 require "spec"
 require "../src/backtracer"
 
-def with_configuration(shared = true)
+def with_configuration(shared = true, &)
   yield shared ? Backtracer.configuration : Backtracer::Configuration.new
 end
 
-def with_backtrace(backtrace, **options)
+def with_backtrace(backtrace, **options, &)
   yield Backtracer::Backtrace::Parser.parse(backtrace, **options)
 end
 
-def with_frame(method, path = nil, lineno = nil, column = nil, **options)
+def with_frame(method, path = nil, lineno = nil, column = nil, **options, &)
   line = String.build do |io|
     if path
       io << path
@@ -28,7 +28,8 @@ def with_foo_frame(
   path = "#{__DIR__}/foo.cr",
   lineno = 1,
   column = 7,
-  **options
+  **options,
+  &
 )
   with_frame(method, path, lineno, column, **options) do |frame|
     yield frame

src/backtracer.cr

@@ -1,7 +1,7 @@
 module Backtracer
   class_getter(configuration) { Configuration.new }
 
-  def self.configure : Nil
+  def self.configure(&) : Nil
     yield configuration
   end