RS 7.8.6 July maintenance release notes (#1843)

* DOC-5372 RS 7.8.6 July maintenance release notes

* DOC-5481 Copied CVE-2025-32023 fix to the RS 7.8.6 July maintenance release notes

* DOC-5372 Added another resolved issue to RS 7.8.6 July maintenance release notes

* DOC-5372 Added build number to RS 7.8.6 July release notes

* DOC-5372 Added checksums to RS 7.8.6 July release notes

* DOC-5372 Changed RS 7.8.6-152 release month from July to August

Author: rrelledge