privateca/snippets test(s) are failing

[minherz]

Description

After the dependency upgrades in #8919 one or more tests under privateca/snippets fail in Java 11 (sponge) and Java 17 (sponge).

Based on the errors it is hard to identify reason(s) for the errors. All tests are suspended (ignored).

[minherz]

@Sita04 looks like this code is also owned by @GoogleCloudPlatform/dee-infra.