Accepting request 902711 from home:j-engel:banking

- Update to 4.6
  + Bugfixes
- Fix building for openSUSE Leap 15.3 and SLE 15 SP3
  (define used guile version)

OBS-URL: https://build.opensuse.org/request/show/902711
OBS-URL: https://build.opensuse.org/package/show/Office/gnucash?expand=0&rev=13

gnucash.spec

@@ -28,7 +28,7 @@
 %endif
 
 Name:           gnucash
-Version:        4.5
+Version:        4.6
 Release:        0
 Summary:        Personal Finance Manager
 License:        SUSE-GPL-2.0-with-openssl-exception OR SUSE-GPL-3.0-with-openssl-exception