Update host OS and FreeBSD QEMU hosts for build-and-test-on-freebsd

Update the Ubuntu host OS that QEMU runs FreeBSD hosts on to Ubuntu 24.04.

Changes the workflow to a matrix build against the current stable release of FreeBSD, as well as the
latest legacy release update.

Signed-off-by: Winford <winford@object.stream>

Author: UncleGrumpy

.github/workflows/build-and-test-on-freebsd.yaml

@@ -34,10 +34,17 @@ concurrency:
 
 jobs:
   build-and-test-on-freebsd:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     name: Build and test AtomVM on FreeBSD
     env:
       ATOMVM_EXAMPLE: "atomvm-example"
+
+    strategy:
+      fail-fast: false
+
+      matrix:
+        os_release: ["13.4", "14.2"]
+
     steps:
 
     - uses: actions/checkout@v4
@@ -47,7 +54,7 @@ jobs:
       uses: vmactions/freebsd-vm@v1
       timeout-minutes: 20
       with:
-        release: 13.2
+        release: ${{ matrix.os_release }}
         envs: 'ATOMVM_EXAMPLE'
         usesh: true
         sync: rsync