auto-merge envoyproxy/envoy[release/v1.31] into envoyproxy/envoy-open…

…ssl[release/v1.31]

* upstream/release/v1.31:
  opentelemetrytracer: avoid exporting when there are no spans (#36313)
  build(deps): bump distroless/base-nossl-debian12 from `4cc93c5` to `e130c09` in /ci (#36322)
  ci: Workaround flakey ext_proc test
  ci/format: Remove ~unused CI format test (#35986)
  bazel/ci: Mark builds with Engflow pool requirements (#36300)
  bazel/rbe: Rename `engflow_pool` -> `rbe_pool` (#36301)
  use bash source rather than dirname $0 (#35804)
  repo/ci: Shift remaining CI -> github (#35904)
  bazel/ci: Use workspace rather than action envs for fake scm revision (#36298)
  bazel/ci: Prepare repo for using Engflow RBE (#36293)
  ci/rbe: Use GCR image for Engflow RBE (#36032)
  ci: Remove azp (#36355)
  [1.31] ci: Remove mobile config (#36354)