remove Ubuntu 18.04 as supported OS (#402)

saz · web-flow · commit 51b47780af6b · 2024-12-25T10:34:41.000+01:00
diff --git a/metadata.json b/metadata.json
@@ -51,7 +51,6 @@
     {
       "operatingsystem": "Ubuntu",
       "operatingsystemrelease": [
-        "18.04",
         "20.04",
         "22.04"
       ]
