Integrate patch and notes v1.12.3 (#8218)

Signed-off-by: Sebastian Spaink <sebastianspaink@gmail.com>
Co-authored-by: Johan Fylling <johan.dev@fylling.se>

CHANGELOG.md

@@ -5,6 +5,26 @@ project adheres to [Semantic Versioning](http://semver.org/).
 
 ## Unreleased
 
+## 1.12.3
+
+This is a bug fix release addressing two issues:
+
+### Bundle polling is being misconfigured when discovery bundle is updated ([#8215](https://github.com/open-policy-agent/opa/issues/8215))
+
+This is an issue where the polling interval for discovery (`discovery.polling.min_delay_seconds` and
+`discovery.polling.max_delay_seconds`) were misinterpreted on reconfiguration, causing extremely long update intervals.
+
+Reported by @loganmiller-chime, authored by @sspaink
+
+### Decision log `size` buffer
+`buffer_size_limit_bytes` misconfigured during reconfiguration ([#8213](https://github.com/open-policy-agent/opa/pull/8213))
+
+This is a regression in the decision log, where the `decision_logs.reporting.buffer_size_limit_bytes` was mistakenly
+assigned the value of `decision_logs.reporting.upload_size_limit_bytes` during reconfiguration.
+This issue is only present when `decision_logs.reporting.buffer_type` is set to `size`, which is the default value.
+
+Authored by @sspaink
+
 ## 1.12.2
 
 This bug fix release address issues found in the new string interpolation feature