- Update to 20.0.4:
  * dializer: Fix a bug where merging PLT:s could lose info. The
    bug was introduced in Erlang/OTP 20.0.
  * erts: A timer internal bit-field used for storing scheduler id
    was too small. As a result, VM internal timer data structures
    could become inconsistent when using 1024 schedulers on the
    system. Note that systems with less than 1024 schedulers are
    not effected by this bug. This bug was introduced in ERTS
    version 7.0 (OTP 18.0).
  * erts: Automatic cleanup of a BIF timer, when the owner process
    terminated, could race with the timeout of the timer. This
    could cause the VM internal data structures to become
    inconsistent which very likely caused a VM crash. This bug was
    introduced in ERTS version 9.0 (OTP 20.0).
- Update to 20.0.3:
  * asn1: Default values now work in extension for PER, so if you
    give the atom asn1_DEFAULT instead of a value it will become
    the default value.
  * compiler: Fail labels on guard BIFs weren't taken into account
    during an optimization pass, and a bug in the validation pass
    sometimes prevented this from being noticed when a fault
    occurred.
  * erts: Binary append operations did not check for overflow,
    resulting in nonsensical results when huge binaries were
    appended.
  * ssh: All unknown options are sent to the transport handler
    regardless of type.

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