* New upstream release from the beta channel (FIREFOX_65_0b4_BUILD1)
* Drop upstreamed patches
  - remove debian/patches/fix-pixman-build-ppc64el.patch
  - remove debian/patches/extra-webrtc-build-configs.patch
  - remove debian/patches/update-gn-mozbuild.patch
* Update patches
  - debian/patches/rust-drop-dll-checksums.patch
  - debian/patches/webrtc-fix-compiler-flags-for-armhf.patch
  - debian/patches/fix-armhf-webrtc-build.patch
  - debian/patches/no-region-overrides-for-google-search.patch
  - debian/patches/ppc-no-static-sizes.patch
  - debian/patches/ubuntu-ua-string-changes.patch
* Bump build-dep on rustc >= 1.30.0 and cargo >= 0.31
* Use amazon-in override for "gu-IN", "mai", "ml", "pa-IN", "ta"
  - update debian/config/searchplugins.conf
* Do not attach Wi-Fi syslog to apport reports (LP: #1801383)
  - update debian/apport/source_firefox.py.in