These tests in the TS require additional system packages. It might not be apparent on a full fledged desktop Linux, but it shows on a barebone system, e.g. on a RHEL 9 minimal installation.

Thinking about GH issues, JIRA, Knowledge Base, asciidoc documentation, web pages....I believe the best place to preserve the information is right here, in those actual test cases.

e.g.
```
$ ./mvnw verify -Dnative -pl integration-tests/main -Dtest=RestClientTestCase#testEmojis
...
[ERROR] Failures:
[ERROR] RestClientTestCase.testEmojis:54 1 expectation failed.
Response body doesn't match expectation.
Expected: is "????????"
Actual: ????????????????????????????????
```
To fix:
```
sudo dnf install glibc-all-langpacks
```
Works fine now.

Locales tests need the language pack too:

Before:
```
[ERROR] Failures:
[ERROR] LocalesIT.testCurrencies:53 1 expectation failed.
Response body doesn't match expectation.
Expected: is "?esk? koruna"
Actual: esk koruna
```
After:
```
HTTP/1.1 200 OK
Content-Type: application/octet-stream
content-length: 14

česká koruna
```