Update heroku/buildpacks-dotnet to v0.3.0 (#49)

* Update DOTNET_CNB_VERSION version to 0.3.0

* Update test to reflect artifacts path changes

Introduced in heroku/buildpacks-dotnet#186

* Update changelog PR links

---------

Co-authored-by: heroku-linguist[bot] <136119646+heroku-linguist[bot]@users.noreply.github.com>
Co-authored-by: Rune Soerensen <[email protected]>

Author: heroku-linguist[bot]

CHANGELOG.md

@@ -2,6 +2,11 @@
 
 ## [Unreleased]
 
+### Changed
+
+- The `sdk` element in detected `global.json` files is no longer required. The SDK version to install is now inferred from the solution/project files when `global.json` doesn't define SDK configuration. ([#49](https://github.com/heroku/heroku-buildpack-dotnet/pull/49))
+- The buildpack will now set `--artifacts-path` to a temporary directory during `dotnet publish`. This change reduces the number of unused, duplicated and/or intermediate files in the app directory. Published output for each project is still written to the same location relative to the the project directory (`bin/publish`, as configured using the `PublishDir` property). ([#49](https://github.com/heroku/heroku-buildpack-dotnet/pull/49))
+
 ## [v7] - 2025-02-12
 
 ### Added

bin/compile

@@ -7,7 +7,7 @@ set -euo pipefail
 BUILD_DIR="${1}"
 ENV_DIR="${3}"
 
-DOTNET_CNB_VERSION="0.2.2"
+DOTNET_CNB_VERSION="0.3.0"
 
 BUILDPACK_DIR=$(cd "$(dirname "$(dirname "${BASH_SOURCE[0]}")")" && pwd)
 

spec/hatchet/buildpack_spec.rb

@@ -22,11 +22,11 @@
           remote:        Installing SDK
           remote: -----> Publish solution
           remote:        Using `Release` build configuration
-          remote:        Running `dotnet publish /tmp/build_.*/foo.csproj --runtime linux-x64 "-p:PublishDir=bin/publish"`
+          remote:        Running `dotnet publish /tmp/build_.*/foo.csproj --runtime linux-x64 "-p:PublishDir=bin/publish" --artifacts-path /tmp/build_artifacts`
           remote: 
           remote:            Determining projects to restore...
           remote:            Restored /tmp/build_.*/foo.csproj .*
-          remote:            foo -> /tmp/build_.*/bin/Release/net8.0/linux-x64/foo.dll
+          remote:            foo -> /tmp/build_artifacts/bin/foo/release_linux-x64/foo.dll
           remote:            foo -> /tmp/build_.*/bin/publish/
           remote: 
           remote:        Done .*