Bump ring:ring from 1.8.1 to 1.9.3 in /dummy

[github-actions[bot]]

Bumps ring:ring from 1.8.1 to 1.9.3.

Changelog

Sourced from ring:ring's changelog.

1.9.3 (2021-04-26)

• Fixed missing arity on async OutputStream (#436)
• Updated Jetty to 9.4.40.v20210413

1.9.2 (2021-03-20)

• Updated Jetty to 9.4.38.v20210224 (#433)
• Fixed reflection warning (#432)

1.9.1 (2021-02-17)

• Updated Ring-Codec dependency to 1.1.3
• Updated Jetty to 9.4.36.v20210114

1.9.0 (2021-02-03)

• Fixed automatic closing of response stream on exception (#420)
• Changed woff media type to font/woff & added woff2 media type (#421)
• Changed TTF media type to font/ttf (#426)
• Improved formatting in ring.middleware.stacktrace (#391)
• Improved performance of async responses (#428)
• Added :exclude-ciphers option to Jetty adapter (#405)
• Added :exclude-protocols option to Jetty adapter (#405)
• Added :ssl-context option to Jetty adapter (#412)
• Added :async-timeout-handler option to Jetty adapter (#410)
• Added :keystore-scan-interval option to Jetty adapter (#417)

1.8.2 (2020-10-06)

• Updated Jetty to 9.4.31.v20200723 (#411)

Commits

• 99ece0b Release 1.9.3
• 7aac615 Update Jetty to 9.4.40
• a04213b Merge pull request #438 from audriu/patch-1
• 24c5fa0 Fix API docs location
• bb98e6a Fix missing arity on async OutputStream
• b93e341 Release 1.9.2
• d9ca138 Update Jetty dependency to 9.4.38
• ff648f3 Merge pull request #432 from sirmspencer/sirmspencer-add-type-hint
• df1b8cf Add type hint to eliminate reflection warning
• eb73b9d Release 1.9.1
• Additional commits viewable in compare view