bump mariner-release (#3553)

SPECS/mariner-release/mariner-release.spec

@@ -1,7 +1,7 @@
 Summary:        CBL-Mariner release files
 Name:           mariner-release
 Version:        2.0
-Release:        17%{?dist}
+Release:        18%{?dist}
 License:        MIT
 Vendor:         Microsoft Corporation
 Distribution:   Mariner
@@ -62,6 +62,9 @@ EOF
 %config(noreplace) %{_sysconfdir}/issue.net
 
 %changelog
+* Tue Aug 16 2022 Andrew Phelps <anphel@microsoft.com> - 2.0-18
+- Updating version for August update 2.
+
 * Wed Aug 03 2022 Pawel Winogrodzki <pawelwi@microsoft.com> - 2.0-17
 - Updating version for August update.