update: add linux fedora container CI - CPP build test only (#2722)

* update: add linux_fedora_build_cpp CI - CPP build test only - x86-64

Signed-off-by: Melissa Kilby <mkilby@apple.com>

* update: add linux_fedora_build_cpp_aarch64 CI - CPP build test only - arm64

Co-authored-by: Mike Drob <mdrob@apple.com>
Signed-off-by: Melissa Kilby <mkilby@apple.com>

* update: convert linux_fedora_build_cpp to matrix.arch loop

Co-authored-by: Mike Drob <mdrob@apple.com>
Signed-off-by: Melissa Kilby <mkilby@apple.com>

---------

Signed-off-by: Melissa Kilby <mkilby@apple.com>
Co-authored-by: Mike Drob <mdrob@apple.com>

.github/workflows/pull_request.yml

@@ -44,3 +44,25 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       - uses: ./.github/actions/build-docs
+
+  linux_fedora_build_cpp:
+    name: Linux Fedora CPP Build (${{ matrix.arch }})
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - host: ubuntu-22.04
+            arch: x86_64
+          - host: ubuntu-22.04-arm
+            arch: aarch64
+
+    runs-on: ${{ matrix.host }}
+    container:
+      image: fedora:42
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v5
+
+      - name: CPP Build Test - No Release
+        run: |
+          bash ./.github/scripts/setup+build-cpp-linux-fedora-container.sh