snapcraft: fix build

Change-Id: I8ac570f0ad859b2ea2ee83ca8fe3927848148ff3

extras/packaging/gnu-linux/docker/Dockerfile_snap

 ARG RISK=edge
-ARG UBUNTU=jammy
+ARG UBUNTU=focal
 
 FROM ubuntu:$UBUNTU as builder
 ARG RISK
@@ -83,6 +83,7 @@ ENV PATH="/snap/bin:/snap/snapcraft/current/usr/bin:/snap/snapcraft/current/libe
 ENV SNAP="/snap/snapcraft/current"
 ENV SNAP_NAME="snapcraft"
 ENV SNAP_ARCH="amd64"
+ENV DISABLE_PIPEWIRE=true
 
 ADD extras/packaging/gnu-linux/scripts/build-package-snap.sh /opt/build-package-snap.sh
 CMD ["/opt/build-package-snap.sh"]

extras/packaging/gnu-linux/rules/snap/jami/snapcraft.yaml

@@ -168,7 +168,7 @@ package-repositories:
     components: [main]
     suites: [jami]
     key-id: A295D773307D25A33AE72F2F64CD5FA175348F84
-    url: https://dl.jami.net/nightly/ubuntu_22.04/
+    url: https://dl.jami.net/nightly/ubuntu_20.04/
 
 parts:
   desktop-launch:
@@ -304,7 +304,7 @@ parts:
     - libswscale-dev
     - libva-dev
     - libvdpau-dev
-    - libpipewire-0.3-dev
+    - libpipewire-0.2-dev
     - libargon2-0-dev # opendht
     - libexpat1-dev
     - libjsoncpp-dev
@@ -327,7 +327,7 @@ parts:
     - libegl1
     - libgbm1
     - libgudev-1.0-0
-    - libjsoncpp25
+    - libjsoncpp1
     - libllvm12
     - libminizip1
     - libnm0