This update for seamonkey fixes the following issues:

Update to SeaMonkey 2.53.18.2

  * Block set-cookie from multipart/x-mixed-replace with pref bug
    1864385.
  * Check if WorkerRunnable::Run runs on top of
    WorkerThreadPrimaryRunnable::Run in a worker thread bug 1867982.
  * Process pairs in coord list in PolyArea bug 1878211.
  * Cherry-pick update to dav1d bug 1881093.
  * Land NSS NSS_3_90_2_RTM UPGRADE_NSS_RELEASE bug 1880562.
  * Fix DSN for send later bug 815638.
  * Catch webNavigation error during tab restore bug 1885748.
  * SeaMonkey 2.53.18.2 uses the same backend as Firefox and contains
    the relevant Firefox 60.8 security fixes.
  * SeaMonkey 2.53.18.2 shares most parts of the mail and news code
    with Thunderbird. Please read the Thunderbird 60.8.0 release notes
    for specific security fixes in this release.
  * Additional important security fixes up to Current Firefox 115.9
    and Thunderbird 115.9 ESR plus many enhancements have been
    backported. We will continue to enhance SeaMonkey security in
    subsequent 2.53.x beta and release versions as fast as we are able
    to.