chore: bump tinybus to v0.3.6 and tinystoragedrivers to v2.1.1 - #95

The change bumps the tinybus/tinybus-module version ranges to `>=0.3.6, <0.4` and moves all five tinystoragedrivers git dependencies to a single new rev, and `Cargo.lock` in the tree already records the new rev and the 2.1.1 versions, so the lockfile and manifest agree. I found no defect in this diff; I could not verify that tinybus 0.3.x keeps the APIs the module crate uses, since the `vendor/tinybus` submodule is not readable in this deployment, so that compatibility rests on CI rather than on anything I checked. _The code index is behind this pull request (indexed at `f96fcdb08bb6`), so retrieved context may be out of date._

No findings.