chore: update Fedora base image from version 41 to 43 (#4322)

Update GitHub Actions workflow to use Fedora 43 (1.6) instead of Fedora
41.

Most of s390x tests are now passing, so it is safe to move to the newer
Fedora version.

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<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit

* **Chores**
* Updated build-system VM configuration to Fedora 43 across CI workflows
and adjusted base image download references to the Fedora 43 release
path.
* Only workflow configuration changed; no application code, public APIs,
or user-facing functionality were modified.

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Signed-off-by: Nestor Acuna Blanco <nestor.acuna@ibm.com>

Author: nestoracunablanco

.github/workflows/component-builder-publish.yml

@@ -13,8 +13,8 @@ jobs:
   guest-fedora-amd64:
     runs-on: ubuntu-latest
     env:
-      FEDORA_IMAGE: Fedora-Cloud-Base-Generic-41-1.4.x86_64.qcow2
-      FEDORA_VERSION: 41
+      FEDORA_IMAGE: Fedora-Cloud-Base-Generic-43-1.6.x86_64.qcow2
+      FEDORA_VERSION: 43
       CPU_ARCH: amd64
       FULL_EMULATION: "true"
       DEBIAN_FRONTEND: noninteractive
@@ -34,7 +34,7 @@ jobs:
         run: sudo chmod 0644 /boot/vmlinuz*
       - name: Fetch base Fedora image
         working-directory: ./containers/fedora
-        run: wget -q "https://download.fedoraproject.org/pub/fedora/linux/releases/41/Cloud/x86_64/images/${{ env.FEDORA_IMAGE }}"
+        run: wget -q "https://download.fedoraproject.org/pub/fedora/linux/releases/43/Cloud/x86_64/images/${{ env.FEDORA_IMAGE }}"
       - name: Install uv
         uses: astral-sh/setup-uv@v8.2.0
         with:

.github/workflows/component-builder.yml

@@ -11,8 +11,8 @@ jobs:
   guest-fedora-amd64:
     runs-on: ubuntu-latest
     env:
-      FEDORA_IMAGE: Fedora-Cloud-Base-Generic-41-1.4.x86_64.qcow2
-      FEDORA_VERSION: 41
+      FEDORA_IMAGE: Fedora-Cloud-Base-Generic-43-1.6.x86_64.qcow2
+      FEDORA_VERSION: 43
       CPU_ARCH: amd64
       FULL_EMULATION: "true"
       DEBIAN_FRONTEND: noninteractive
@@ -32,7 +32,7 @@ jobs:
         run: sudo chmod 0644 /boot/vmlinuz*
       - name: Fetch base Fedora image
         working-directory: ./containers/fedora
-        run: wget -q "https://download.fedoraproject.org/pub/fedora/linux/releases/41/Cloud/x86_64/images/${{ env.FEDORA_IMAGE }}"
+        run: wget -q "https://download.fedoraproject.org/pub/fedora/linux/releases/43/Cloud/x86_64/images/${{ env.FEDORA_IMAGE }}"
       - name: Install uv
         uses: astral-sh/setup-uv@v8.2.0
         with: