fix: make promise deserialization less flaky

[KATT]

• loosen lint rules
• make promise deserialization less flaky

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Files	Coverage Δ
src/async/asyncTypes.ts	100.00% <100.00%> (ø)
src/async/deserializeAsync.ts	99.08% <100.00%> (+11.64%)	⬆️
src/sync/createTson.ts	100.00% <ø> (ø)
src/sync/deserialize.ts	100.00% <ø> (ø)
src/sync/serialize.ts	100.00% <ø> (ø)
src/types.ts	100.00% <ø> (ø)
src/internals/assert.ts	87.50% <87.50%> (ø)
src/internals/testUtils.ts	97.61% <96.42%> (-2.39%)	⬇️

... and 1 file with indirect coverage changes

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[github-actions]

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