^^ These master build failures are due a formatting issue in the source-scaffold-source-http connector:

diff --git a/airbyte-integrations/connectors/source-scaffold-source-http/Dockerfile b/airbyte-integrations/connectors/source-scaffold-source-http/Dockerfile
index add764c..0f081bb 100644
--- a/airbyte-integrations/connectors/source-scaffold-source-http/Dockerfile
+++ b/airbyte-integrations/connectors/source-scaffold-source-http/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.9.11-alpine3.15 as base
+FROM python:3.9.13-alpine3.15 as base
 
 # build and load all requirements
 FROM base as builder

Looks like the generated connectors weren't updated after https://github.com/airbytehq/airbyte/pull/15111