Bump jsonrpclib to 0.2.0; make all jsonRpcPayloads required

[kubukoz]

No description provided.

[kubukoz]

@copilot update the test sources to match the new behavior

[Copilot]

@copilot update the test sources to match the new behavior

Done in 1d35996. Added @required to the result field in the expected output of the two relevant test cases ("request with input and output compiles" and "base type null is filtered from union variants").

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• s01.oss.sonatype.org
  • Triggering command: /usr/lib/jvm/temurin-17-jdk-amd64/bin/java /usr/lib/jvm/temurin-17-jdk-amd64/bin/java -XX:+HeapDumpOnOutOfMemoryError -cp /home/REDACTED/.cache/mill/download/0.12.14 mill.REDACTED.MillServerMain /home/REDACTED/work/lsp-smithy/lsp-smithy/out/mill-server/c161aec1ac85104478b08ab0b3cb8f70892b4a37-1 (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
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