github: update bug template

.github/ISSUE_TEMPLATE/mu-bug-report.md

@@ -17,4 +17,4 @@ Detailed steps to reproduce the behavior. If this is about a specific (kind of)
 Please describe the versions of OS, Emacs, mu etc. you are using.
 
 **Checklist**
-- [ ] you are running either the latest 1.4.x release, or a 1.5.11+ development release (otherwise, please upgrade).
+- [ ] you are running either the latest 1.6.x release, or a 1.7.x development release (otherwise, please upgrade).

.github/ISSUE_TEMPLATE/mu4e-bug-report.md

@@ -20,4 +20,4 @@ Please describe the versions of OS, Emacs, mu/mu4e etc. you are using.
 **Checklist**
 - [ ] you are running vanilla emacs (i.e. without Doom, Evil, Spacemacs etc.) (otherwise, please try to reproduce without those
 - [ ] you are running mu4e without any third-party extensions (otherwise, please try to reproduce without those)
-- [ ] you are running either the latest 1.4.x release, or a 1.5.11+ development release (otherwise, please upgrade).
+- [ ] you are running either the latest 1.6.x release, or a 1.7.x development release (otherwise, please upgrade).

.github/issue_template.md

@@ -1,13 +1,15 @@
 # Important! Before filing an issue, please consider the following:
 
-    * Ensure your mu/mu4e setup is no older than the latest stable release (1.4.x).
+    * Ensure your mu/mu4e setup is no older than the latest stable release (1.6.x).
 
-    * Disable any third-party mu4e extensions; this includes customizations like the one in "Doom" /
+    * Disable any third-party mu4e extensions; this includes customizations like the ones in "Doom" /
       "Evil" etc.
 
     * If a problem occurs with a certain (type of) message, attach an (anonymized) example of
       such a message
 
+    * Please provide some minimal steps to reproduce
+
     * Please follow the below template
 
     Thanks!