docs: bump the release version

Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>

Author: vincenzopalazzo

gradle.properties

@@ -1,7 +1,7 @@
 GROUP_ID=io.github.vincenzopalazzo
 ARTIFACT_ID=material-ui-swing
 #VERSION=1.1.2-rc2-SNAPSHOT
-VERSION=1.1.4-rc1-SNAPSHOT
+VERSION=1.1.4-rc1
 MODULE_NAME=io.github.vincenzopalazzo.materialuiswing
 RELEASE_ENABLE=true
 org.gradle.caching=true