* feat: update flux to latest head
Flux has updated some dependencies, including prometheus. Prometheus
has changed in some incompatible ways. Update the flux dependency
to a newer version with the updated prometheus dependency and apply
some small fixes to make everything build. This is in preparation
for a flux release later in the week.
The biggest change is in some tests that were using runtime.DeepEqual
to check the correctness of prometheus metrics. The internals of
these types have changed such that this is not a safe thing to do
anymore. The test now verifies the string representations, as
produced by String(), match.
* fix: update CI script
The scripts/ci/check-system-go-matches-go-mod.sh is failing because
newer go toolchains include the bugfix version in go.mod's go
directive. Update the script to check the major and minor versions
reported by both tools match.