MT#55283 update GH build actions

Run the included backports script for distro-specific packaging.

Add distro suffix to the version so that all build artefacts can be
included in the release without collisions.

Include G.729. This is available in both Sid and Trixie.

Change-Id: I7efcf6a115158c5154936494c5c85628e37b21ab
(cherry picked from commit 68c6bf60a8)
(cherry picked from commit 527797921c)

.github/workflows/debian-package-build.yml

@@ -22,15 +22,25 @@ jobs:
         dist: [trixie, sid]
     steps:
       - uses: actions/checkout@v6
+      - name: Packaging backports
+        run: |
+          set -ex
+          pushd pkg/deb
+          ./generator.sh
+          backports/${{ matrix.dist }}
+          popd
+          rm -rf debian
+          mv pkg/deb/${{ matrix.dist }} debian
+          rm -rf pkg/deb/debian
       - name: Update changelog
         run: |
           set -ex
           OLD_VERSION=$(dpkg-parsechangelog -SVersion)
           SOURCE=$(dpkg-parsechangelog -SSource)
           if [[ "${{ github.ref_type }}" == "tag" ]]; then
-            VERSION_SUFFIX="+gh"
+            VERSION_SUFFIX="+gh+${{ matrix.dist }}"
           else
-            VERSION_SUFFIX="+autobuild${GITHUB_RUN_NUMBER}"
+            VERSION_SUFFIX="+autobuild${GITHUB_RUN_NUMBER}+${{ matrix.dist }}"
           fi
           cat > debian/changelog <<EOT
           ${SOURCE} (${OLD_VERSION}${VERSION_SUFFIX}) UNRELEASED; urgency=medium
@@ -42,7 +52,6 @@ jobs:
       - uses: jtdor/build-deb-action@v1
         with:
           docker-image: debian:${{ matrix.dist }}
-          buildpackage-opts: -Ppkg.ngcp-rtpengine.nobcg729
       - name: Archive build result
         uses: actions/upload-artifact@v6
         with: