Fix Lint/AmbiguousBlockAssociation cop.

.rubocop_todo.yml

@@ -31,11 +31,6 @@ Layout/HashAlignment:
     - 'lib/zip/file.rb'
     - 'rubyzip.gemspec'
 
-# Offense count: 1
-Lint/AmbiguousBlockAssociation:
-  Exclude:
-    - 'test/filesystem/file_nonmutating_test.rb'
-
 # Offense count: 1
 Lint/LiteralAsCondition:
   Exclude:

test/filesystem/file_nonmutating_test.rb

@@ -439,7 +439,7 @@ class ZipFsFileNonmutatingTest < MiniTest::Test
         '*/foo/**/*.txt' => ['globTest/foo/bar/baz/foo.txt']
       }.each do |spec, expected_results|
         results = zf.glob(spec)
-        assert results.all? { |entry| entry.is_a? ::Zip::Entry }
+        assert(results.all? { |entry| entry.is_a? ::Zip::Entry })
 
         result_strings = results.map(&:to_s)
         missing_matches = expected_results - result_strings