Add v5.0.1 changelog

Signed-off-by: Kentaro Hayashi <kenhys@gmail.com>

CHANGELOG.md

@@ -2,6 +2,77 @@
 
 About the past changelog entries, see [old CHANGELOG](CHANGELOG-v4.md) instead.
 
+## Release v5.0.1 - 2023/08/DD
+
+### News
+
+**fluent-package v5.0.1 is a GA (General Availability) version of fluent-package v5 series.**
+
+### Core component
+
+* ruby v3.2.2
+* jemalloc v3.6.0
+* OpenSSL 3.0.8 Windows & macOS
+* fluentd v1.16.2
+
+### Core gems
+
+* async-http v0.60.2
+* bundler v2.3.26
+* cool.io v1.7.1
+* http_parser.rb v0.8.0
+* msgpack v1.7.1
+* oj v3.15.0
+* serverengine v2.3.2
+* sigdump v0.2.5
+* tzinfo v2.0.6
+* tzinfo-data v1.2023.3
+* yajl-ruby v1.4.3
+
+### Bundled plugins and gems
+
+* aws-partitions v1.785.0
+* aws-sdk-core v3.178.0
+* aws-sdk-kms v1.71.0
+* aws-sdk-s3 v1.129.0
+* aws-sdk-sqs v1.61.0
+* aws-sigv4 v1.6.0
+* elasticsearch v8.8.0
+* fluent-diagtool v1.0.1
+* fluent-plugin-calyptia-monitoring v0.1.3
+* fluent-plugin-elasticsearch v5.3.0
+* fluent-plugin-flowcounter-simple 0.1.0
+* fluent-plugin-kafka v0.19.0
+* fluent-plugin-metrics-cmetrics v0.1.2
+* fluent-plugin-opensearch v1.1.3
+* fluent-plugin-prometheus v2.1.0
+* fluent-plugin-prometheus_pushgateway v0.1.1
+* fluent-plugin-record-modifier v2.1.1
+* fluent-plugin-rewrite-tag-filter v2.4.0
+* fluent-plugin-s3 v1.7.2
+* fluent-plugin-sd-dns 0.1.0
+* fluent-plugin-systemd v1.0.5
+* fluent-plugin-td v1.2.0
+* fluent-plugin-utmpx v0.5.0
+* fluent-plugin-webhdfs v1.5.0
+* mini_portile2 v2.8.2
+* prometheus-client v4.1.0
+* rdkafka v0.12.0
+* ruby-kafka v1.5.0
+* systemd-journal v1.4.2
+* td-client v1.0.8
+* webhdfs v0.10.2
+
+Reducing attack vector, protocol-http1 was updated to v0.15.1.
+
+On Windows
+
+* fluent-plugin-parser-winevt_xml v0.2.6
+* fluent-plugin-windows-eventlog v0.8.3
+* fluent-plugin-windows-exporter v1.0.0
+* winevt_c v0.10.1
+* nokogiri v1.15.3 (update)
+
 ## Release v5.0.0 - 2023/07/28
 
 ### News