Update eventing nightly (#4167)

bumping knative.dev/eventing bc6e878...bff7b03:
  > bff7b03 Remove unused filter function (# 8375)
  > 8d8b6c9 RequestReply: Added feature flag for default timeout (# 8361)
  > 7bb320c Chore: field semantic correction  (# 8370)
  > 3345c86 Clean up remove session token (# 8369)
  > 6e7e3d4 Adding sns sink to Integration Sink (# 8365)
  > d4357e3 MT-Broker: return retriable status code based on the state to leverage retries (# 8366)
  > 795e4a3 Move image to map (# 8362)
  > 408db83 We changed the event type on the images (# 8364)
  > f577063 Align label generation and apply on container-source as well (# 8355)
  > cb31cb2 Add integrationsinks-addressable-resolver cluster role (# 8356)
  > 545c14c Change JobSink execution mode variable to `K_EXECUTION_MODE` (# 8350)
  > 91f1c79 Avoid using twice hardcoded strings for the names of the Kube Secret keys, for AWS access/secret key vals (# 8345)
  > cb29ac1 [main] Update community files (# 8354)
  > aef3a14 [main] Format Go code (# 8349)
  > 65da6fc Update integrationsink crd  (# 8347)
  > 01c8068 JobSink: Inject a `KNATIVE_EXECUTION_MODE` environment variable with value `batch` (# 8346)
  > 366ff26 IntegrationSink: rek-test templating support for bool annotations (# 8342)
  > 7176ce6 Add IntegrationSink CRD  (# 8304)
  > 5ad7dab feat: add RequestReply types and CRD (# 8337)
  > 7f313d7 fix: rename `job-sink` to `job_sink` (# 8335)
  > 4f6535a chore: correct comments (# 8336)
  > ebe99e6 Introducing common integration helper and change package name (# 8327)
  > 201e096 [main] Format Go code (# 8334)
  > 6f5edf5 [main] Upgrade to latest dependencies (# 8328)
  > f21370a Integration Api moved to versioned common (# 8325)
  > 63d4da5 Update Integration API and use custom tags on structs for better readability (# 8321)
  > 7abb04d JobSink: Delete secrets associated with jobs when jobs are deleted (# 8331)
  > 8fed0be Allow configuring (opt-in) IMC async handler  (# 8311)

Signed-off-by: Knative Automation <[email protected]>