data/defaults.yaml: Use main ctags installed

Related T594

data/defaults.yaml

@@ -1249,7 +1249,7 @@ swh::deploy::worker::swh_indexer::ctags::config:
     args:
       - http://uffizi.internal.softwareheritage.org:5002/
   workdir: /tmp/swh/indexer.ctags/
-  ctags: /usr/local/bin/ctags
+  ctags: /usr/bin/ctags
   languages:
     abap: ''
     abnf: ''

[Phabricator Migration user]

Some references in the commit message have been migrated:

• T594 is now swh/devel/swh-indexer#594 (closed)