Compile error in EVMC with Nim 2.2.2 and `version-2-0`/`version-2-2` branches:
```
nimbus-eth1/vendor/nim-evmc/evmc/evmc.nim(82, 21) Error: size pragma only allowed for enum types and imported types
```
It's because https://github.com/nim-lang/Nim/pull/24640 has been backported to both branches. So regardless of whether one attempts to update to a future 2.0.16, to 2.2.2, or to a future 2.2.4, this won't work anymore.

It was causing incorrect codegen anyway: https://github.com/nim-lang/Nim/issues/24623