Change Firefox version and tag build2

projects/firefox/config

 # vim: filetype=yaml sw=2
 version: '[% c("abbrev") %]'
 filename: 'firefox-[% c("version") %]-[% c("var/osname") %]-[% c("var/build_id") %]'
-git_hash: 'tor-browser-[% c("var/firefox_version") %]-[% c("var/torbrowser_branch") %]-2-build1'
+git_hash: 'tor-browser-[% c("var/firefox_version") %]-[% c("var/torbrowser_branch") %]-1-build2'
 tag_gpg_id: 1
 git_url: https://git.torproject.org/tor-browser.git
 git_submodule: 1

projects/tor-browser/Bundle-Data/Docs/ChangeLog.txt

 Tor Browser 9.5a13 -- May 20 2020
  * All Platforms
-   * Update Firefox to 68.8.1esr
    * Bump NoScript to 11.0.26
    * Bump Tor to 0.4.3.5
    * Translations update

rbm.conf

@@ -25,7 +25,7 @@ buildconf:
 
 var:
   torbrowser_version: '9.5a13'
-  torbrowser_build: 'build1'
+  torbrowser_build: 'build2'
   torbrowser_incremental_from:
     - 9.5a12
   project_name: tor-browser