pkg/kadm/v1.17.1: revert usage of RequestCachedMetadata

The function needs to be improved and heavily tested before using in
kadm. As is, it's causing bugs.

v1.20.1: fix RequestCachedMetadata when no metadata has been issued yet

See the changelog for more details.

pkg/kadm/v1.17.0: new apis for Kafka 3.8 thru 4.1; use RequestCachedM…

…etadata

Adds APIs for:
* ListConfigResources
* DescribeConsumerGroups
* DescribeShareGroups
* ListGroupsByType (ugly API, not much to do here)
* UpdateFeatures
* FindShareCoordinators
* LastMaxTimestampOffsets
* ListLocalLogStartOffsets
* ListLatestRemoteOffsets
* ListTransactionsByTxPattern
* ForbidAlterRf context decorator for existing AlterPartitionAssignments

Uses RequestCachedMetadata for all requests, which should reduce the
number of metadata requests issued with this library. The cache is for
5s only, which should prevent any staleness issues, but configuration
for caching (or disabling) can be added if the need arises.

v1.20.0: 4.1 support, three apis, four minor bugfixes

See the changelog for more details.

pkg/kmsg/v1.12.0: add proto for 4.1

plugin/kprom/v1.3.0: add buffered_produce_bytes and buffered_fetch_bytes

These complement buffered_produce_records_total and
buffered_fetch_records_total, which are gauges but accidentally have the
_total suffix due to history. Perhaps a new option can be introduced to
allow user provided metric renames, if requested.

Thanks @cleroux for the new metrics!

pkg/sr/v1.5.0: add srfake (a fake schema registry), new APIs

* Fixes tests (thanks @hhromic!)
* Adds Client.Do to issue raw requests (thanks @r-vasquez!)
* Adds RawParams to affix raw parameters to requests (thanks @r-vasquez!)
* Adds Client.RegisterSchema function for fewer HTTP calls (thanks @hhromic!)
* Adds ResponseError type to well-define all errors (thanks @weeco!)
* Adds whole srfake package (thanks @weeco!)

pkg/kadm/v1.16.1: fix panic in Lag

If you pass no groups in Lag, and then the internal ListGroups method
fails, previously the code would panic.

Thanks @man0xff for this fix!

v1.19.5: fix bug with batched FindCoordinator against older brokers /…

… redpanda

See the changelog for more details

v1.19.4: two data race fixes & an EventHubs workaround

See the changelog for more details.