feat: enhance GitHub release tracking with pattern support and version extraction

- Add github_release_pattern field to support multi-product repositories
- Implement get_github_releases_by_pattern() for filtered release matching
- Add parse_github_version_release() to extract version-release components
- Update openbao plugin packages with release patterns and correct versions
- Configure openbao-plugins meta package for manual versioning
- Fix HashiCorp package GitHub repository references
- Support complex tag formats like "secrets-consul-v0.1.0" and "v7.1.3-1"

This enables automatic updates for packages sharing GitHub repos while
maintaining proper RPM version/release semantics and backward compatibility.

rpms/nomad-autoscaler/metadata.yaml

@@ -1,18 +1,21 @@
----
-arch: amd64
-builds:
-  - image: git.unkin.net/unkin/almalinux8-rpmbuilder:latest
-    release: '1'
-    repository: [almalinux/el8]
-    version: 0.4.6
-  - image: git.unkin.net/unkin/almalinux9-rpmbuilder:latest
-    release: '1'
-    repository: [almalinux/el9]
-    version: 0.4.6
-description: The Nomad Autoscaler is an autoscaling daemon for Nomad, architectured around plug-ins to allow for easy extensibility in terms of supported metrics sources, scaling targets and scaling algorithms.
+name: nomad-autoscaler
 github: hashicorp/nomad-autoscaler
+description: The Nomad Autoscaler is an autoscaling daemon for Nomad, architectured
+  around plug-ins to allow for easy extensibility in terms of supported metrics sources,
+  scaling targets and scaling algorithms.
+arch: amd64
+platform: linux
+maintainer: Hashicorp
 homepage: https://github.com/hashicorp/nomad-autoscaler
 license: Mozilla Public License, version 2.0
-maintainer: Hashicorp
-name: nomad-autoscaler
-platform: linux
+builds:
+- repository:
+  - almalinux/el8
+  image: git.unkin.net/unkin/almalinux8-rpmbuilder:latest
+  release: 1-el8
+  version: 0.4.8
+- repository:
+  - almalinux/el9
+  image: git.unkin.net/unkin/almalinux9-rpmbuilder:latest
+  release: 1-el9
+  version: 0.4.8