chore: bump gdvm version to 0.9.0

ci: bsd sed quirks

ci: scope cache to target

test: prevent config overwrite in integration test

can now use cargo test --features integration-tests to avoid the problem

ci: ignore empty lines in target list

chore: bump version to 0.6.2

docs: update install scripts URLs to use gdvm.io

docs: clarify token storage note

ci: simplify cache key in workflows

chore: bump version to 0.5.0