net-p2p/py-transmission-rpc: unbreak after f9fae7539193

<phase: run-depends >

> py38-transmission-rpc-3.3.0 depends on package: py38-typing-extensions>=3.7.4.2<4.0.2.0 - not found

> Installing existing package /packages/All/py38-typing-extensions-4.1.1.pkg

Installing py38-typing-extensions-4.1.1...
Extracting py38-typing-extensions-4.1.1: .......... done

> py38-transmission-rpc-3.3.0 depends on package: py38-typing-extensions>=3.7.4.2<4.0.2.0 - not found

• Error code 1

Reported by: pkg-fallout