build(deps): bump actions/setup-java from 5.7.0 to 6.0.0 - #80

[NullAway] passing @nullable parameter 'null' where @nonnull is required

[NullAway] passing @nullable parameter 'null' where @nonnull is required

[NullAway] passing @nullable parameter 'null' where @nonnull is required

[StreamResourceLeak] Streams that encapsulate a closeable resource should be closed using try-with-resources

[NullAway] initializer method does not guarantee @nonnull fields 'privateKey' (line 58), 'certificateChain' (line 59) are initialized along all control-flow paths (remember to check for exceptions or early returns).

[MixedMutabilityReturnType] This method returns both mutable and immutable collections or maps from different paths. This may be confusing for users of the method.

[NullAway] returning @nullable expression from method with @nonnull return type

[NullAway] returning @nullable expression from method with @nonnull return type

[NullAway] returning @nullable expression from method with @nonnull return type