docs/CHANGELOG.md: document v1.93.15 LTS release

See https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.93.15

docs/CHANGELOG.md

@@ -450,6 +450,23 @@ See changes [here](https://docs.victoriametrics.com/changelog_2023/#v1950)
 
 See changes [here](https://docs.victoriametrics.com/changelog_2023/#v1940)
 
+## [v1.93.15](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.93.15)
+
+Released at 2024-06-07
+
+**v1.93.x is a line of [LTS releases](https://docs.victoriametrics.com/lts-releases/). It contains important up-to-date bugfixes.
+The v1.93.x line will be supported for at least 12 months since [v1.93.0](https://docs.victoriametrics.com/CHANGELOG.html#v1930) release**
+
+* SECURITY: upgrade Go builder from Go1.22.2 to Go1.22.4. See the list of issues addressed in [Go1.22.3](https://github.com/golang/go/issues?q=milestone%3AGo1.22.3+label%3ACherryPickApproved) and [Go1.22.4](https://github.com/golang/go/issues?q=milestone%3AGo1.22.4+label%3ACherryPickApproved).
+* SECURITY: upgrade base docker image (Alpine) from 3.19.1 to 3.20.0. See [alpine 3.20.0 release notes](https://www.alpinelinux.org/posts/Alpine-3.20.0-released.html).
+
+* BUGFIX: [vmui](https://docs.victoriametrics.com/#vmui): fix calendar display when `UTC+00:00` timezone is set. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/6239).
+* BUGFIX: [vmagent](https://docs.victoriametrics.com/vmagent/): skip empty data blocks before sending to the remote write destination. Thanks to @viperstars for [the pull request](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/6241).
+* BUGFIX: properly estimate the needed memory for query execution if it has the format [`aggr_func`](https://docs.victoriametrics.com/metricsql/#aggregate-functions)([`rollup_func[d]`](https://docs.victoriametrics.com/metricsql/#rollup-functions) (for example, `sum(rate(request_duration_seconds_bucket[5m]))`). This should allow performing aggregations over bigger number of time series when VictoriaMetrics runs in environments with small amounts of available memory. The issue has been introduced in [this commit](https://github.com/VictoriaMetrics/VictoriaMetrics/commit/5138eaeea0791caa34bcfab410e0ca9cd253cd8f) in [v1.83.0](https://docs.victoriametrics.com/changelog_2022/#v1830).
+* BUGFIX: [Single-node VictoriaMetrics](https://docs.victoriametrics.com/) and `vmselect` in [VictoriaMetrics cluster](https://docs.victoriametrics.com/cluster-victoriametrics/): filter deleted label names and values from [`/api/v1/labels`](https://docs.victoriametrics.com/url-examples/#apiv1labels) and [`/api/v1/label/.../values`](https://docs.victoriametrics.com/url-examples/#apiv1labelvalues) responses when `match[]` filter matches small number of time series. The issue was introduced [v1.81.0](https://docs.victoriametrics.com/changelog_2022/#v1810).
+* BUGFIX: [vmalert](https://docs.victoriametrics.com/vmalert/): fix misleading error logs in vmalert's stdout when unsupported HTTP path is requested.
+* BUGFIX: retry files delete attempts on vXFS file system for `EEXIST` error type. See the [related issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/6396). Thanks to @pludov for the [pull request](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/6398).
+
 ## [v1.93.14](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.93.14)
 
 Released at 2024-04-19

docs/LTS-releases.md

@@ -24,4 +24,4 @@ to [the latest available releases](https://docs.victoriametrics.com/changelog/).
 ## Currently supported LTS release lines
 
 - 1.97.x - the latest one is [v1.97.5 LTS release](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.97.5)
-- 1.93.x - the latest one is [v1.93.14 LTS release](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.93.14)
+- 1.93.x - the latest one is [v1.93.15 LTS release](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.93.15)