Fix release process for GitHub immutable releases

The 0.2.0 release failed because two systems were both authoritative for
publishing: dev-bin/release.sh called `gh release create` locally
immediately after pushing the tag, and the tag push also triggered the
release.yml workflow which runs GoReleaser. The local create won the
race and produced a published, asset-less release that became
immediately immutable under GitHub's new immutable releases feature.
GoReleaser then failed to PATCH target_commitish on the existing
release.

Two changes:

- dev-bin/release.sh: drop the trailing `gh release create` call. The
  script's job ends at `git push --tags`; CI owns publishing.
- .goreleaser.yml: drop `target_commitish: "{{ .FullCommit }}"` (the
  tag already points at the right commit, so the field is unnecessary
  and triggers an immutability-incompatible PATCH). Add
  `name_template: "{{.Version}}"` so GoReleaser-published releases keep
  the same "0.2.0"-style title the manual `gh release create` was
  producing.

Author: oschwald

.goreleaser.yml

@@ -75,4 +75,4 @@ nfpms:
         dst: '/usr/share/doc/mmdbconvert/parquet-queries.md'
 
 release:
-  target_commitish: "{{ .FullCommit }}"
+  name_template: "{{.Version}}"

CHANGELOG.md

@@ -6,6 +6,15 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to
 [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.2.1] - 2026-05-01
+
+### Fixed
+
+- Release process now works with GitHub's immutable releases feature. The v0.2.0
+  tag was published but no binaries were attached; v0.2.1 is the first
+  downloadable 0.2.x release. See the [0.2.0] entry below for the changes
+  shipped in this version.
+
 ## [0.2.0] - 2026-05-01
 
 ### Added
@@ -66,5 +75,6 @@ and this project adheres to
 - Multi-database merge validation
 - Performance testing (< 10ms for small databases, 7MB memory)
 
+[0.2.1]: https://github.com/maxmind/mmdbconvert/compare/v0.2.0...v0.2.1
 [0.2.0]: https://github.com/maxmind/mmdbconvert/compare/v0.1.0...v0.2.0
 [0.1.0]: https://github.com/maxmind/mmdbconvert/releases/tag/v0.1.0

dev-bin/release.sh

@@ -98,5 +98,3 @@ $notes"
 git tag -a -m "$message" "$tag"
 
 git push --tags
-
-gh release create --target "$current_branch" -t "$version" -n "$notes" "$tag"