chore: release main (#1962)

Author: github-actions[bot]

.github/config/.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "1.5.0"
+  ".": "1.6.0"
 }

CHANGELOG.md

@@ -0,0 +1,29 @@
+# Changelog
+
+## [1.6.0](https://github.com/prometheus/client_java/compare/v1.5.0...v1.6.0) (2026-03-19)
+
+
+### Features
+
+* Add OpenMetrics2 configuration support ([#1939](https://github.com/prometheus/client_java/issues/1939)) ([d9d8dab](https://github.com/prometheus/client_java/commit/d9d8dabb975ff1ff15f118e141da6036c255f371))
+* Add OpenMetrics2 enabled flag ([#1953](https://github.com/prometheus/client_java/issues/1953)) ([ffa0d39](https://github.com/prometheus/client_java/commit/ffa0d39e1380c3d6f01e7f7edd0e1946cd553ce6))
+* Add skeleton OpenMetrics2TextFormatWriter ([#1951](https://github.com/prometheus/client_java/issues/1951)) ([01f53e9](https://github.com/prometheus/client_java/commit/01f53e945edfc337b9ed13c0b5c28c8a170c3a48))
+
+
+### Bug Fixes
+
+* **deps:** update dependency io.prometheus:prometheus-metrics-bom to v1.5.0 ([#1877](https://github.com/prometheus/client_java/issues/1877)) ([043fc57](https://github.com/prometheus/client_java/commit/043fc5742752fdc2f67f0219418030a190c53bde))
+* **deps:** update dependency org.springframework.boot:spring-boot-starter-parent to v4.0.3 ([#1900](https://github.com/prometheus/client_java/issues/1900)) ([0d800d0](https://github.com/prometheus/client_java/commit/0d800d0a91578e48f34909472c183174fdf1d83e))
+* **deps:** update jetty monorepo to v12.1.7 ([#1932](https://github.com/prometheus/client_java/issues/1932)) ([5bd3b79](https://github.com/prometheus/client_java/commit/5bd3b7932f454f3ed2cf55f26d6e1e1908d9ad16))
+* **deps:** update junit-framework monorepo to v6.0.3 ([#1880](https://github.com/prometheus/client_java/issues/1880)) ([05ad751](https://github.com/prometheus/client_java/commit/05ad751a40053f11eae90b9e6cbd741814ca71a7))
+* exclude standalone examples from `mise run format` ([#1931](https://github.com/prometheus/client_java/issues/1931)) ([537fb88](https://github.com/prometheus/client_java/commit/537fb88aae4048ab36041268f902afbbdce54a96))
+* Handle empty datapoints in otel exporter ([#1898](https://github.com/prometheus/client_java/issues/1898)) ([59c8552](https://github.com/prometheus/client_java/commit/59c8552f3d67c06d82344383b45e07fea8ed88b9))
+* inline set-version logic in build-release.sh ([#1884](https://github.com/prometheus/client_java/issues/1884)) ([c050435](https://github.com/prometheus/client_java/commit/c050435a4153046c72d158991c4c8e064dfb24ec))
+* reduce lychee retries to avoid compounding GitHub 429s ([#1940](https://github.com/prometheus/client_java/issues/1940)) ([cc17d6e](https://github.com/prometheus/client_java/commit/cc17d6e4346c9d51e054010fddc75cf8935cbc7d))
+* remove version manipulation from build-release.sh ([#1886](https://github.com/prometheus/client_java/issues/1886)) ([93e2b6d](https://github.com/prometheus/client_java/commit/93e2b6da48abc03ba7d96ffff5020ab73c1ee8c1))
+* use /tree/ instead of /blob/ for directory URL ([#1944](https://github.com/prometheus/client_java/issues/1944)) ([b81332e](https://github.com/prometheus/client_java/commit/b81332e3a09e465f956f118a2403e64b83771ae5))
+
+
+### Documentation
+
+* document DCO sign-off requirement for contributions ([#1937](https://github.com/prometheus/client_java/issues/1937)) ([0860e77](https://github.com/prometheus/client_java/commit/0860e7742b08ab019d129ea24c348191c3f9e0da))