Update project revision from 1.8.1-SNAPSHOT to 1.9.0

Update pom.xml

updated the version which we are going to release (1.8.1)

Change branch name from develop to Release_v1.8.0

Update release branch from v1.6.3 to v1.6.4

Change branch name from develop to Release_v1.6.3

Change branch name from develop to Release_v1.7.0

Change branch name from develop to Release_v1.6.2

Update CHANGELOG.md

Change branch name from develop to Release_v1.6.0

dependabot security fix for Release 1.5.0 (#262)