Test failed on master branch

[wingyplus]

I clone and run mix test and found 2 tests was broken:

Excluding tags: [integration: true]

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  1) test generate/2 generates enum type messages (Protobuf.Protoc.Generator.EnumTest)
     test/protobuf/protoc/generator/enum_test.exs:7
     Assertion with =~ failed
     code:  assert msg =~ "field :A, 0\n  field :B, 1\n"
     left:  "defmodule EnumFoo do\n  @moduledoc false\n  use Protobuf, enum: true\n@type t :: integer | :A | :B\n\n\n  field :A, 0\n\n  field :B, 1\n\nend\n"
     right: "field :A, 0\n  field :B, 1\n"
     stacktrace:
       test/protobuf/protoc/generator/enum_test.exs:24: (test)

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  2) test generate/2 supports nested enum messages (Protobuf.Protoc.Generator.MessageTest)
     test/protobuf/protoc/generator/message_test.exs:369
     Assertion with =~ failed
     code:  assert msg =~ "field :a, 0\n  field :b, 1\n"
     left:  "defmodule Foo.Nested.EnumFoo do\n  @moduledoc false\n  use Protobuf, enum: true\n@type t :: integer | :a | :b\n\n\n  field :a, 0\n\n  field :b, 1\n\nend\n"
     right: "field :a, 0\n  field :b, 1\n"
     stacktrace:
       test/protobuf/protoc/generator/message_test.exs:394: (test)

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OK, passed 100 tests
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OK, passed 100 tests
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OK, passed 100 tests
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OK, passed 100 tests
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OK, passed 100 tests
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OK, passed 100 tests
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OK, passed 100 tests
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OK, passed 100 tests
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OK, passed 100 tests
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OK, passed 100 tests
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OK, passed 100 tests
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OK, passed 100 tests
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OK, passed 100 tests
.

Finished in 1.4 seconds
19 doctests, 13 properties, 287 tests, 2 failures, 4 excluded, 3 skipped

Randomized with seed 236945