Update protocolbuffers/dart (#2046)

Author: app-token-plugins[bot]

plugins/protocolbuffers/dart/v23.0.0/.dockerignore

@@ -0,0 +1,2 @@
+*
+!Dockerfile

plugins/protocolbuffers/dart/v23.0.0/Dockerfile

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+# syntax=docker/dockerfile:1.18
+FROM dart:3.9.3-sdk AS build
+
+WORKDIR /build
+RUN git clone --depth 1 --branch protoc_plugin-v23.0.0 https://github.com/google/protobuf.dart.git \
+ && cd protobuf.dart/protoc_plugin \
+ && dart pub get \
+ && dart compile exe bin/protoc_plugin.dart -o /build/protoc-gen-dart
+
+FROM scratch
+COPY --from=build --link /etc/passwd /etc/passwd
+COPY --from=build --link /runtime/ /
+COPY --from=build --link /build/protoc-gen-dart .
+USER nobody
+ENTRYPOINT [ "/protoc-gen-dart" ]

plugins/protocolbuffers/dart/v23.0.0/buf.plugin.yaml

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+version: v1
+name: buf.build/protocolbuffers/dart
+plugin_version: v23.0.0
+source_url: https://github.com/google/protobuf.dart
+description: Base types for Dart. Generates message and enum types.
+output_languages:
+  - dart
+spdx_license_id: BSD-3-Clause
+license_url: https://github.com/google/protobuf.dart/blob/protoc_plugin-v23.0.0/LICENSE

tests/testdata/buf.build/protocolbuffers/dart/v23.0.0/eliza/plugin.sum

@@ -0,0 +1 @@
+h1:EHjoAFC0f9MYDGp5ponHPsHSq+oITr/nJ+W10CQ0jPw=

tests/testdata/buf.build/protocolbuffers/dart/v23.0.0/petapis/plugin.sum

@@ -0,0 +1 @@
+h1:nMXYfauiozPs3tgQnr1CC/YD1AednnhCB7OOoSLUjGo=