rspamd: update to 3.6.

3.6: 03 Aug 2023
  * [Conf] Add `one_shot` to some specific multimap rules
  * [Conf] Add language detection configuration
  * [Conf] Add missing attributes for the language detection configuration
  * [Conf] Remove outdated composite rules
  * [Feature] Add `sentinel_password` option
  * [Feature] Add ability to deny specific fuzzy flags by default
  * [Feature] Add controller endpoint to get fuzzy hashes from messages
  * [Feature] Add extra symbol when URL redirector reaches nested limit
  * [Feature] Add function to transliterate utf8 to ascii with some normalisation
  * [Feature] Add html parsing limit
  * [Feature] Add order to urls structure
  * [Feature] Add some missing functions to `lua_rsa` library
  * [Feature] Allow fuzzy workers to exchange blocked information
  * [Feature] Allow to have weak flags in fuzzy storage
  * [Feature] Allow to read options from maps in the multimap plugin
  * [Feature] Allow to use other methods when fasttext detection is enabled
  * [Feature] Count stats per key per flag
  * [Feature] Finish all features of dkim_keygen in Lua
  * [Feature] Khash: Allow static initialisation
  * [Feature] Maps: Add on_load support
  * [Feature] Preliminary implementation of dynamic composites
  * [Feature] Process HTML parts before text ones
  * [Feature] Reorganise struct rspamd_url to be 64 bytes size
  * [Feature] Save fuzzy ratelimit buckets
  * [Feature] Use in-place deflation for strings
  * [Feature] external_relay: add ip_map strategy
  * [Fix] Avoid race between config new/free by using a counter
  * [Fix] Do not use `rspamadm.dkim_keygen`
  * [Fix] Feed fasttext language model with the pre-tokenized words
  * [Fix] Fix `rspamd_has_only_html_part`
  * [Fix] Fix an old issue with order of destruction race between redis pool and lua
  * [Fix] Fix format string usage
  * [Fix] Fix parsing due to old bug revealed
  * [Fix] Fix parsing of the mask values that are invalid
  * [Fix] Ignore non-unique stop words
  * [Fix] Include the last character when parsing the last header with no value
  * [Fix] More fixes to fuzzystat
  * [Fix] Set proper counter
  * [Fix] Try harder to clean pending bucket
  * [Fix] Try harder to remove bad hyperscan files
  * [Fix] Update stats before encryption...
  * [Fix] dmarc gramar - allow spaces before ";"
  * [Fix] rbl: fix dependency registration when symbols_prefixes is used
  * [Fix] remove obsolete rspamd-redirector files
  * [Fix] test external_relay: count should always be the last rule, as it have no matching condition
  * [Project] Allow to register multimap symbols dynamically
  * [Project] Implement fasttext language detection
  * [Rework] Default max shots must not influence options
  * [Rework] Write dkim keygen tool in lua
  * [Rules] Add thread hijacking composite rule

(wiz)