Log Message:
prometheus: updated to 2.16.0

2.16.0:
[FEATURE] React UI: Support local timezone on /graph
[FEATURE] PromQL: add absent_over_time query function
[FEATURE] Adding optional logging of queries to their own file
[ENHANCEMENT] React UI: Add support for rules page and "Xs ago" \ 
duration displays
[ENHANCEMENT] React UI: alerts page, replace filtering togglers tabs with checkboxes
[ENHANCEMENT] TSDB: Export metric for WAL write errors
[ENHANCEMENT] TSDB: Improve query performance for queries that only touch the \ 
most recent 2h of data.
[ENHANCEMENT] PromQL: Refactoring in parser errors to improve error messages
[ENHANCEMENT] PromQL: Support trailing commas in grouping opts
[ENHANCEMENT] Scrape: Reduce memory usage on reloads by reusing scrape cache
[ENHANCEMENT] Scrape: Add metrics to track bytes and entries in the metadata cache
[ENHANCEMENT] promtool: Add support for line-column numbers for invalid rules output
[ENHANCEMENT] Avoid restarting rule groups when it is unnecessary
[BUGFIX] React UI: Send cookies on fetch() on older browsers
[BUGFIX] React UI: adopt grafana flot fix for stacked graphs
[BUFGIX] React UI: broken graph page browser history so that back button works \ 
as expected
[BUGFIX] TSDB: ensure compactionsSkipped metric is registered, and log proper \ 
error if one is returned from head.Init
[BUGFIX] TSDB: return an error on ingesting series with duplicate labels
[BUGFIX] PromQL: Fix unary operator precedence
[BUGFIX] PromQL: Respect query.timeout even when we reach query.max-concurrency
[BUGFIX] PromQL: Fix string and parentheses handling in engine, which affected \ 
React UI
[BUGFIX] PromQL: Remove output labels returned by absent() if they are produced \ 
by multiple identical label matchers
[BUGFIX] Scrape: Validate that OpenMetrics input ends with
[BUGFIX] Remote read: return the correct error if configs can't be marshal'd to JSON
[BUGFIX] Remote write: Make remote client Store use passed context, which can \ 
affect shutdown timing
[BUGFIX] Remote write: Improve sharding calculation in cases where we would \ 
always be consistently behind by tracking pendingSamples
[BUGFIX] Ensure prometheus_rule_group metrics are deleted when a rule group is \ 
removed