[#3737] configure version bump up, platforms list updated

Author: wwencel

configure.ac

@@ -6,7 +6,7 @@ AC_PREREQ([2.69])
 # For released versions, this is in x.y.z format.
 # For GIT versions, this is x.y.z-git, where x.y.z denotes the next development
 # version that is worked on and that is to be released.
-AC_INIT(kea, 2.7.6-git, kea-dev@lists.isc.org)
+AC_INIT(kea, 2.7.7-git, kea-dev@lists.isc.org)
 AC_CONFIG_SRCDIR(README)
 
 # serial-tests is not available in automake version before 1.13, so

platforms.rst

@@ -17,10 +17,10 @@ Regularly Tested Platforms
 Kea is officially supported on Alpine, Debian, Fedora, FreeBSD, RHEL, and Ubuntu
 systems. Kea-|release| builds have been tested on:
 
-* Alpine — 3.17, 3.18, 3.19, 3.20
+* Alpine — 3.18, 3.19, 3.20, 3.21
 * Debian — 10, 11, 12
-* Fedora — 39, 40
-* FreeBSD — 13
+* Fedora — 40, 41
+* FreeBSD — 14
 * RHEL — 8, 9
 * Ubuntu — 20.04, 22.04, 24.04