Update README.md with EOL (#212)

* Update README.md with EOL

* Update README.md

Co-authored-by: odubajDT <[email protected]>
Signed-off-by: Giovanni Liva <[email protected]>

---------

Signed-off-by: Giovanni Liva <[email protected]>
Co-authored-by: odubajDT <[email protected]>

Author: thisthat

README.md

@@ -1,5 +1,7 @@
 # Keptn Integrations ArtifactHub
 
+## Keptn V1 has reached end of life on December 22nd, 2023 similar to [Keptn V1](https://github.com/keptn/keptn).
+
 This repository holds the metadata for Keptn integrations to be listed on the [ArtifactHub](https://artifacthub.io) and consequently [Keptn docs integration page](https://keptn.sh/docs/integrations/). 
 
 Each Keptn integration listed consists of at least an