Merge tag 'v1.127.0' into develop

No significant changes since 1.127.0rc1.

- Update [MSC4140](matrix-org/matrix-spec-proposals#4140) implementation to no longer cancel a user's own delayed state events with an event type & state key that match a more recent state event sent by that user. ([\#17810](element-hq/synapse#17810))

- Fixed a minor typo in the Synapse documentation. Contributed by @karuto12. ([\#18224](element-hq/synapse#18224))

- Remove undocumented `SYNAPSE_USE_FROZEN_DICTS` environment variable. ([\#18123](element-hq/synapse#18123))
- Fix detection of workflow failures in the release script. ([\#18211](element-hq/synapse#18211))
- Add caching support to media endpoints. ([\#18235](element-hq/synapse#18235))

* Bump anyhow from 1.0.96 to 1.0.97. ([\#18201](element-hq/synapse#18201))
* Bump bcrypt from 4.2.1 to 4.3.0. ([\#18207](element-hq/synapse#18207))
* Bump bytes from 1.10.0 to 1.10.1. ([\#18227](element-hq/synapse#18227))
* Bump http from 1.2.0 to 1.3.1. ([\#18245](element-hq/synapse#18245))
* Bump sentry-sdk from 2.19.2 to 2.22.0. ([\#18205](element-hq/synapse#18205))
* Bump serde from 1.0.218 to 1.0.219. ([\#18228](element-hq/synapse#18228))
* Bump serde_json from 1.0.139 to 1.0.140. ([\#18202](element-hq/synapse#18202))
* Bump ulid from 1.2.0 to 1.2.1. ([\#18246](element-hq/synapse#18246))

Author: yingziwu

.ci/before_build_wheel.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+set -xeu
+
+# On 32-bit Linux platforms, we need libatomic1 to use rustup
+if command -v yum &> /dev/null; then
+   yum install -y libatomic
+fi
+
+# Install a Rust toolchain
+curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain 1.82.0 -y --profile minimal

.github/workflows/docker.yml

@@ -24,7 +24,7 @@ jobs:
         run: docker buildx inspect
 
       - name: Install Cosign
-        uses: sigstore/cosign-installer@v3.7.0
+        uses: sigstore/cosign-installer@v3.8.1
 
       - name: Checkout repository
         uses: actions/checkout@v4

CHANGES.md

@@ -0,0 +1,6 @@
+Licensees holding a valid commercial license with Element may use this
+software in accordance with the terms contained in a written agreement
+between you and Element.
+
+To purchase a commercial license please contact our sales team at
+licensing@element.io