This will interpolate the value of module attributes in match assertions
in ExUnit. Basically, the old diff would look like this:
```
1) test assert match with module attribute (ExUnit.AssertionsTest)
test/ex_unit/assertions_test.exs:186
match (=) failed
code: assert {2, @test_mod_attribute} = Value.tuple()
left: {2, @test_mod_attribute}
right: {2, 1}
stacktrace:
test/ex_unit/assertions_test.exs:187: (test)
```
And now it will look like this:
```
1) test assert match with module attribute (ExUnit.AssertionsTest)
test/ex_unit/assertions_test.exs:186
match (=) failed
code: assert {2, @test_mod_attribute} = Value.tuple()
left: {2, 2}
right: {2, 1}
stacktrace:
test/ex_unit/assertions_test.exs:187: (test)
```