Update bug_report.md

Improve bug report template to make it more suitable for Ghidra. 

Added an attachments section to prompt for file attachments, and added Java version instead of browser (which is likely to be irrelevant).

.github/ISSUE_TEMPLATE/bug_report.md

@@ -23,10 +23,13 @@ A clear and concise description of what you expected to happen.
 **Screenshots**
 If applicable, add screenshots to help explain your problem.
 
+**Attachments**
+If applicable, please attach any files that caused problems or log files generated by the software.
+
 **Environment (please complete the following information):**
- - OS: [e.g. iOS]
- - Browser [e.g. chrome, safari]
- - Version [e.g. 22]
+ - OS: [e.g. macOS 10.14.2]
+ - Java Version: [e.g. 11.0]
+ - Ghidra Version: [e.g. 9.0]
 
 **Additional context**
 Add any other context about the problem here.