tidy venv usage in `install.sh` #29797

Job	Run time
version / identify version	26s
Build amd64	13m 48s
Build arm64	15m 14s
Test debian:bullseye GUI ARM64	1m 23s
Test debian:bullseye GUI Intel	1m 1s
Test debian:bullseye CLI ARM64	1m 49s
Test debian:bullseye CLI Intel	42s
Test debian:bookworm GUI ARM64	1m 13s
Test debian:bookworm GUI Intel	54s
Test debian:bookworm CLI ARM64	1m 34s
Test debian:bookworm CLI Intel	38s
Test ubuntu:focal (20.04) GUI ARM64	3m 52s
Test ubuntu:focal (20.04) GUI Intel	2m 15s
Test ubuntu:focal (20.04) CLI ARM64	1m 52s
Test ubuntu:focal (20.04) CLI Intel	36s
Test ubuntu:jammy (22.04) GUI ARM64	1m 50s
Test ubuntu:jammy (22.04) GUI Intel	1m 2s
Test ubuntu:jammy (22.04) CLI ARM64	1m 6s
Test ubuntu:jammy (22.04) CLI Intel	47s
Test ubuntu:noble (24.04) GUI ARM64	2m 16s
Test ubuntu:noble (24.04) GUI Intel	1m 14s
Test ubuntu:noble (24.04) CLI ARM64	1m 10s
Test ubuntu:noble (24.04) CLI Intel	28s
📦 Publish Installers (3.10, debian, DEB, deb, deb, linux, arm64, amd64, chia-blockchain-cli_{0}-... / Publish ARM64 GUI DEB	26s
📦 Publish Installers (3.10, debian, DEB, deb, deb, linux, arm64, amd64, chia-blockchain-cli_{0}-... / Publish Intel GUI DEB	21s
📦 Publish Installers (3.10, debian, DEB, deb, deb, linux, arm64, amd64, chia-blockchain-cli_{0}-... / Publish ARM64 CLI DEB	22s
📦 Publish Installers (3.10, debian, DEB, deb, deb, linux, arm64, amd64, chia-blockchain-cli_{0}-... / Publish Intel CLI DEB	29s
	58m 48s

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