Handle gzipped icalendar responses

[rgalanakis]

See janko/down#87
for more context

Migrated from webhookdb-api#787. Opened by @rgalanakis

Opened at: 2023-10-01T15:35:38Z
Closed at: 2023-10-01T15:55:02Z
Merged at: 2023-10-01T15:55:02Z

Commits:

• Handle gzipped icalendar responses

See janko/down#87
for more context

• Fix flaky install spec

Files:

• 🟡 Gemfile (🔺1/🔻1)
• 🟡 Gemfile.lock (🔺2/🔻2)
• 🟡 lib/webhookdb/http.rb (🔺22/0)
• 🟡 lib/webhookdb/replicator/icalendar_calendar_v1.rb (🔺1/🔻1)
• 🟡 spec/spec_helper.rb (🔺2/0)
• 🟡 spec/webhookdb/api/install_spec.rb (🔺1/🔻1)
• 🟡 spec/webhookdb/replicator/icalendar_calendar_v1_spec.rb (🔺28/0)