Update CHANGELOG

CHANGELOG

 2024-04-21: initial release
+2024-02-21: METRICS: changed import path form mk.gui.plugins.metrics to mk.gui.plugins.metrics.utils
+            added metrics/graph for unbound_unwanted_replies
+            moved to ~/local/lib/check_mk/gui/plugins/metrics (from local/share/check_mk/web/plugins/metrics)
+            added perfometer for unbound_answers (NOERROR/SERVFAIL) and unbound_unwanted_replies
+            WATO: fixed missing FixedValue in import
+            changed Alternative titles to "Upper levels in qps"/"Upper levels in %" to better differentiate between them
+            added explicit unit "%2
+            added ruleset for bakery
+            renamed to unbound.py (from unbound_parameters.py)
+            moved to ~/local/lib/check_mk/gui/plugins/wato/check_parameters (from local/share/check_mk/web/plugins/wato)            
+            check plugin: removed Union -> no need "int | float" should do
+            added levels_upper_NOERROR to default parameters -> show up in info line
+            bakery: added bakery plugin und wato for bakery
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