feat: update pipelines

- remove buildah (now in image)
- add fedora42/fedora43/fedora44 pipelines
- use el9 for fedora build
- build prerequisites for fedora rpmbuilder tooling

.woodpecker/build-fedora43.yaml

@@ -0,0 +1,26 @@
+when:
+  - event: pull_request
+
+steps:
+  - name: build rpms
+    image: git.unkin.net/unkin/almalinux9-rpmbuilder:latest
+    commands:
+      - mkdir -p /woodpecker/rpms
+      - ln -s /woodpecker/rpms /workspace
+      - ./tools/build build-all --distro fedora/43 --buildah
+    privileged: true
+    backend_options:
+      kubernetes:
+        serviceAccountName: default
+        resources:
+          requests:
+            memory: 512Mi
+            cpu: 1
+          limits:
+            memory: 2Gi
+            cpu: 2
+
+  - name: show rpms
+    image: git.unkin.net/unkin/fedora43-base:latest
+    commands:
+      - find /woodpecker/src/git.unkin.net/unkin/rpmbuilder/ -type f -name "*.rpm"