ci: upgrade gcovr to the latest version

And adjust lcov invocation for lcov 2.1

Change-Id: I17d0006ef7f0795b142ab2e3b77d0fe04b10f0df
diff --git a/.jenkins.d/00-deps.sh b/.jenkins.d/00-deps.sh
index abb84a4..09e5cec 100755
--- a/.jenkins.d/00-deps.sh
+++ b/.jenkins.d/00-deps.sh
@@ -34,7 +34,7 @@
 FORMULAE=(boost openssl pkgconf)
 case $JOB_NAME in
     *code-coverage)
-        APT_PKGS+=(lcov)
+        APT_PKGS+=(lcov libjson-xs-perl)
         ;;
     *Docs)
         APT_PKGS+=(doxygen graphviz)