Update changelog for v1.33.3

(cherry picked from commit 05a76cb)

CHANGELOG.md

@@ -1,7 +1,7 @@
 <!-- markdownlint-disable MD024 -->
 # Changelog
 
-## Unreleased
+## v1.33.3 [2025-02-25]
 
 ### Important Changes
 
@@ -13,6 +13,28 @@
   thus might break existing queries. Furthermore, the tag modification might
   increase cardinality in your database.
 
+### Bugfixes
+
+- [#16546](https://github.com/influxdata/telegraf/pull/16546) `agent` Add authorization and user-agent when watching remote configs
+- [#16507](https://github.com/influxdata/telegraf/pull/16507) `inputs.gnmi` Allow to disable using first namespace as origin
+- [#16511](https://github.com/influxdata/telegraf/pull/16511) `inputs.proxmox` Allow search domain to be empty
+- [#16530](https://github.com/influxdata/telegraf/pull/16530) `internal` Fix plural acronyms in SnakeCase function
+- [#16539](https://github.com/influxdata/telegraf/pull/16539) `logging` Handle closing correctly and fix tests
+- [#16535](https://github.com/influxdata/telegraf/pull/16535) `processors.execd` Detect line-protocol parser correctly
+
+### Dependency Updates
+
+- [#16506](https://github.com/influxdata/telegraf/pull/16506) `deps` Bump github.com/ClickHouse/clickhouse-go/v2 from 2.30.1 to 2.30.3
+- [#16502](https://github.com/influxdata/telegraf/pull/16502) `deps` Bump github.com/antchfx/xmlquery from 1.4.1 to 1.4.4
+- [#16519](https://github.com/influxdata/telegraf/pull/16519) `deps` Bump github.com/aws/aws-sdk-go-v2/service/cloudwatch from 1.43.1 to 1.43.14
+- [#16503](https://github.com/influxdata/telegraf/pull/16503) `deps` Bump github.com/aws/aws-sdk-go-v2/service/dynamodb from 1.36.2 to 1.40.0
+- [#16522](https://github.com/influxdata/telegraf/pull/16522) `deps` Bump github.com/nats-io/nats.go from 1.37.0 to 1.39.0
+- [#16505](https://github.com/influxdata/telegraf/pull/16505) `deps` Bump github.com/srebhan/cborquery from 1.0.1 to 1.0.3
+- [#16534](https://github.com/influxdata/telegraf/pull/16534) `deps` Bump github.com/vishvananda/netlink from 1.3.0 to 1.3.1-0.20250221194427-0af32151e72b
+- [#16521](https://github.com/influxdata/telegraf/pull/16521) `deps` Bump go.opentelemetry.io/collector/pdata from 1.12.0 to 1.25.0
+- [#16504](https://github.com/influxdata/telegraf/pull/16504) `deps` Bump golang.org/x/net from 0.34.0 to 0.35.0
+- [#16512](https://github.com/influxdata/telegraf/pull/16512) `deps` Bump golangci-lint from v1.63.4 to v1.64.5
+
 ## v1.33.2 [2025-02-10]
 
 ### Important Changes