[RELEASE] Released version 2.3.4

Released version 2.3.4 with the following main changes :
    - MINOR: reg-tests: add a way to add service dependency
    - BUG/MINOR: sample: check alloc_trash_chunk return value in concat()
    - BUG/MINOR: reg-tests: fix service dependency script
    - MINOR: reg-tests: add base prometheus test
    - Revert "BUG/MINOR: dns: SRV records ignores duplicated AR records"
    - BUG/MINOR: sample: Memory leak of sample_expr structure in case of error
    - BUG/MINOR: check: Don't perform any check on servers defined in a frontend
    - BUG/MINOR: init: enforce strict-limits when using master-worker
    - MINOR: contrib/prometheus-exporter: avoid connection close header
    - MINOR: contrib/prometheus-exporter: use fill_info for process dump
diff --git a/VERDATE b/VERDATE
index 2926d22..c247e2d 100644
--- a/VERDATE
+++ b/VERDATE
@@ -1,2 +1,2 @@
 $Format:%ci$
-2021/01/08
+2021/01/13