[RELEASE] Released version 2.5.0

Released version 2.5.0 with the following main changes :
    - BUILD: SSL: add quictls build to scripts/build-ssl.sh
    - BUILD: SSL: add QUICTLS to build matrix
    - CLEANUP: sock: Wrap `accept4_broken = 1` into additional parenthesis
    - BUILD: cli: clear a maybe-unused  warning on some older compilers
    - BUG/MEDIUM: cli: make sure we can report a warning from a bind keyword
    - BUG/MINOR: ssl: make SSL counters atomic
    - CLEANUP: assorted typo fixes in the code and comments
    - BUG/MINOR: ssl: free correctly the sni in the backend SSL cache
    - MINOR: version: mention that it's stable now
diff --git a/VERDATE b/VERDATE
index ee32615..3bb192d 100644
--- a/VERDATE
+++ b/VERDATE
@@ -1,2 +1,2 @@
 $Format:%ci$
-2021/11/19
+2021/11/23