prometheus: updated to 2.12.0

2.12.0:
[FEATURE] Track currently active PromQL queries in a log file.
[FEATURE] Enable and provide binaries for mips64 / mips64le architectures.
[ENHANCEMENT] Improve responsiveness of targets web UI and API endpoint.
[ENHANCEMENT] Improve remote write desired shards calculation.
[ENHANCEMENT] Flush TSDB pages more precisely.
[ENHANCEMENT] Add prometheus_tsdb_retention_limit_bytes metric.
[ENHANCEMENT] Add logging during TSDB WAL replay on startup.
[ENHANCEMENT] Improve TSDB memory usage.
[BUGFIX] Check for duplicate label names in remote read.
[BUGFIX] Mark deleted rules' series as stale on next evaluation.
[BUGFIX] Fix JavaScript error when showing warning about out-of-sync server time.
[BUGFIX] Fix promtool test rules panic when providing empty exp_labels.
[BUGFIX] Only check last directory when discovering checkpoint number.
[BUGFIX] Fix error propagation in WAL watcher helper functions.
[BUGFIX] Correctly handle empty labels from alert templates.

2.11.0:
[CHANGE] Remove max_retries from queue_config (it has been unused since rewriting remote-write to utilize the write-ahead-log).
[CHANGE] The meta file BlockStats no longer holds size information. This is now dynamically calculated and kept in memory. It also includes the meta file size which was not included before.
[CHANGE] Renamed metric from prometheus_tsdb_wal_reader_corruption_errors to prometheus_tsdb_wal_reader_corruption_errors_total.
[FEATURE] Add option to use Alertmanager API v2.
[FEATURE] Added humanizePercentage function for templates.
[FEATURE] Include InitContainers in Kubernetes Service Discovery.
[FEATURE] Provide option to compress WAL records using Snappy.
[ENHANCEMENT] Create new clean segment when starting the WAL.
[ENHANCEMENT] Reduce allocations in PromQL aggregations.
[ENHANCEMENT] Add storage warnings to LabelValues and LabelNames API results.
[ENHANCEMENT] Add prometheus_http_requests_total metric.
[ENHANCEMENT] Enable openbsd/arm build.
[ENHANCEMENT] Remote-write allocation improvements.
[ENHANCEMENT] Query performance improvement: Efficient iteration and search in HashForLabels and HashWithoutLabels.
[ENHANCEMENT] Allow injection of arbitrary headers in promtool.
[ENHANCEMENT] Allow passing external_labels in alert unit tests groups.
[ENHANCEMENT] Allows globs for rules when unit testing.
[ENHANCEMENT] Improved postings intersection matching.
[ENHANCEMENT] Reduced disk usage for WAL for small setups.
[ENHANCEMENT] Optimize queries using regexp for set lookups.
[BUGFIX] resolve race condition in maxGauge.
[BUGFIX] Fix ZooKeeper connection leak.
[BUGFIX] Improved atomicity of .tmp block replacement during compaction for usual case.
[BUGFIX] Fix "unknown series references" after clean shutdown.
[BUGFIX] Re-calculate block size when calling block.Delete.
[BUGFIX] Fix unsafe snapshots with head block.
[BUGFIX] prometheus_tsdb_compactions_failed_total is now incremented on any compaction failure.

(adam)