fix(liquibase_update.sh): remove leading slash from CHANGELOG_FILE va…

…riable to fix incorrect file path

.github/test/scripts/liquibase_update.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
-: ${CHANGELOG_FILE:="/changelog/changelog.sql"}
+: ${CHANGELOG_FILE:="changelog.sql"}
 : ${DEFAULTS_FILE:="/liquibase/changelog/liquibase-mssql.properties"}
 
 echo "Applying changes to the database. Changelog: $CHANGELOG_FILE"