Prepare release v2.6.1 (kedacore#2623)

Signed-off-by: Zbynek Roubalik <zroubali@redhat.com>

.github/ISSUE_TEMPLATE/3_bug_report.yml

@@ -46,6 +46,7 @@ body:
     label: KEDA Version
     description: What version of KEDA that are you running?
     options:
+    - "2.6.1"
     - "2.6.0"
     - "2.5.0"
     - "2.4.0"

CHANGELOG.md

@@ -10,6 +10,7 @@
 ## History
 
 - [Unreleased](#unreleased)
+- [v2.6.1](#v261)
 - [v2.6.0](#v260)
 - [v2.5.0](#v250)
 - [v2.4.0](#v240)
@@ -33,12 +34,22 @@
 
 ### Improvements
 
-- **General**: Fix generation of metric names if any of ScaledObject's triggers is unavailable ([#2592](https://github.com/kedacore/keda/issues/2592))
-- **General**: Fix logging in KEDA operator and properly set `ScaledObject.Status` in case there is a problem in a ScaledObject's trigger ([#2603](https://github.com/kedacore/keda/issues/2603))
+- TODO ([#XXX](https://github.com/kedacore/keda/issue/XXX))
 
 ### Breaking Changes
 
-- TODO ([#XXX](https://github.com/kedacore/keda/pull/XXX))
+- TODO ([#XXX](https://github.com/kedacore/keda/issue/XXX))
+
+### Other
+
+- TODO ([#XXX](https://github.com/kedacore/keda/issue/XXX))
+
+## v.2.6.1
+
+### Improvements
+
+- **General**: Fix generation of metric names if any of ScaledObject's triggers is unavailable ([#2592](https://github.com/kedacore/keda/issues/2592))
+- **General**: Fix logging in KEDA operator and properly set `ScaledObject.Status` in case there is a problem in a ScaledObject's trigger ([#2603](https://github.com/kedacore/keda/issues/2603))
 
 ### Other