Update d2 to version 0.6.9 / rev 9 via SR 1243578
    
    https://build.opensuse.org/request/show/1243578
    by user jfkw + anag+factory
    - Update to version 0.6.9:
      * Animations: style.animated: true is supported on shapes #2250
      * Connections now support link #1955
      * Vars: vars in markdown blocks are substituted #2218
      * Markdown: Github-flavored tables work in md blocks #2221
      * Render: adds box arrowheads #2227
      * d2 fmt now supports a --check flag #2253
      * CLI: PNG output to stdout is supported using --stdout-format png - #2291
      * Globs: &connected and &leaf filters are implemented #2299
      * CLI: add --no-xml-tag for direct HTML embedding #2302
      * CLI: play cmd added for opening d2 input in online playground #2242
      * Composition: links pointing to own board are purged #2203
      * Syntax: reserved keywords must be unquoted #2231
      * Latex: Backslashes in Latex blocks do not escape #2232
        This is a breaking cha