component/firefox: version up 53.0.3

firefox > 52 is needed to allow ignoring ssl certificates errors with
geckodriver

component/firefox/buildout.cfg

@@ -21,9 +21,9 @@ parts =
 # fail to run if exists.
 
 [firefox]
-<= firefox-51
+<= firefox-53
 
-[firefox-51]
+[firefox-53]
 recipe = slapos.recipe.build
 slapos_promise =
   file:firefox
@@ -33,10 +33,10 @@ depends =
   ${liberation-fonts:location}
   ${ipaex-fonts:location}
 
-version = 51.0.1
+version = 53.0.3
 
-x86 = http://download-installer.cdn.mozilla.net/pub/firefox/releases/${:version}/linux-i686/en-US/firefox-${:version}.tar.bz2 9a5b67e9d759a1e4df004294a24b2b43
-x86-64 = http://download-installer.cdn.mozilla.net/pub/firefox/releases/${:version}/linux-x86_64/en-US/firefox-${:version}.tar.bz2 bd93f2652d1d90d59ae462439a93c85f
+x86 = https://download-installer.cdn.mozilla.net/pub/firefox/releases/${:version}/linux-i686/en-US/firefox-${:version}.tar.bz2 0339f0a8be0e5af9a206bdfe67689cf8
+x86-64 = https://download-installer.cdn.mozilla.net/pub/firefox/releases/${:version}/linux-x86_64/en-US/firefox-${:version}.tar.bz2 6219384d2631020adf1b5bb96f73621d
 geckodriver_x86 = https://github.com/mozilla/geckodriver/releases/download/v0.14.0/geckodriver-v0.14.0-linux32.tar.gz b5836f5a944fe9f3ed1a67c7b342c6a7
 geckodriver_x86-64 = https://github.com/mozilla/geckodriver/releases/download/v0.14.0/geckodriver-v0.14.0-linux64.tar.gz 4a185d3179862a35104603b9274452e7