fix: missing runfiles and update stable dependencies

Fixing #5 (closed) requires updating to toolchain_utils=1.2.0 & rules_coreutils=1.0.1.

These require updating more of our other bazel repos to recent stable versions:

ape=1.0.1 - requires also updating ape binaries runfile paths.

rules_diff=1.0.0

rules_zstd=1.0.0

download_utils=1.0.1

rules_tar=1.0.1

toolchain_utils=1.2.0 changes the path structure of wrapped binaries (e.g //labgrid/toolchain/qemu-system:$(QEMU_SYSTEM). This requires changing formatting in //labgrid/config:rule.bzl.

Closes #5 (closed).