fix: build and publish nzbget to artifactapi rpm-vendor repos

nzbget is absent from the artifactapi rpm-vendor-el9/rpm-vendor-el8
repodata, so `dnf install nzbget` fails on the media host. Its build.sh
requested the download asset using PACKAGE_RELEASE, which carries the
dist tag (e.g. 1.el9); upstream only publishes nzbget-<version>-1.x86_64.rpm,
so the fetch 404s and a 22-byte junk file gets published that createrepo
cannot index. The existing junk nzbget-26.1-1.el9 also makes the deploy
dedup probe return 200, blocking re-upload of a corrected 26.1.

- Point the build.sh source URL at the upstream release-1 asset name,
  keeping the dist-tagged local output filename (mirrors code-server).
- Bump nzbget el8/el9 to 26.2 (current upstream stable) so the corrected
  build produces a fresh filename that the deploy step will actually PUT.

Claude-Session: https://claude.ai/code/session_015ur3i7D2azsMAWTSVABApv

rpms/nzbget/metadata.yaml

@@ -13,9 +13,9 @@ builds:
   - almalinux/el8
   image: git.unkin.net/unkin/almalinux8-rpmbuilder:latest
   release: 1
-  version: '26.1'
+  version: '26.2'
 - repository:
   - almalinux/el9
   image: git.unkin.net/unkin/almalinux9-rpmbuilder:latest
   release: 1
-  version: '26.1'
+  version: '26.2'

rpms/nzbget/resources/build.sh

@@ -2,6 +2,10 @@
 
 set -e
 
-# Download the pre-built RPM from GitHub releases
+# Download the pre-built RPM from GitHub releases.
+# Upstream always publishes the release-1 asset (nzbget-<version>-1.x86_64.rpm);
+# the source URL must use the upstream asset name, not PACKAGE_RELEASE, which
+# carries the dist tag (e.g. 1.el9) and does not exist upstream. Only the local
+# output filename is dist-tagged, mirroring the code-server package.
 curl -L -o /app/dist/nzbget-${PACKAGE_VERSION}-${PACKAGE_RELEASE}.x86_64.rpm \
-  https://artifactapi.k8s.syd1.au.unkin.net/api/v1/remote/github/nzbgetcom/nzbget/releases/download/v$PACKAGE_VERSION/nzbget-${PACKAGE_VERSION}-${PACKAGE_RELEASE}.x86_64.rpm
+  https://artifactapi.k8s.syd1.au.unkin.net/api/v1/remote/github/nzbgetcom/nzbget/releases/download/v$PACKAGE_VERSION/nzbget-${PACKAGE_VERSION}-1.x86_64.rpm