Escape invalid XML chars in testCase and testSuite names

[sfc-gh-abalik]

Fix for #285

With a ParameterizedTest it is possible to generate test case names with invalid XML characters. E.g.

@ParameterizedTest
@ValueSource(strings = {"Weird\bname"})
void testFoo(String input) {
    ...
}

The test case name is derived from the input string, which in this case contains an invalid XML char \b. When tools (like IDEs) try to parse the junit XML, they'll fail due to the invalid char.

Fix it by escaping test case names. It looks like test suite names could also contain invalid XML chars, so I'm escaping those as well.

[illicitonion]

Thanks!

[illicitonion]

The CI failure is spurious, but is blocked on bazel-contrib/rules_jvm_external#1173 getting released - hopefully it will get released soon!

[sfc-gh-abalik]

Looks like bazel-contrib/rules_jvm_external#1173 got released.
I think we just need to rebase after #288 is merged.

[shs96c]

@sfc-gh-abalik, with #288 we now have the CI builds working properly again. Could you please rebase on top of current HEAD of main so that we can land this change? Thank you for your patience as we were sorting that out!

[shs96c]

LGTM. Thank you!