fix(deps): update module maunium.net/go/mautrix to v0.26.2

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
maunium.net/go/mautrix	v0.26.1 → v0.26.2

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Release Notes

mautrix/go (maunium.net/go/mautrix)

v0.26.2

Compare Source

• (bridgev2) Added chunked portal deletion to avoid database locks when
  deleting large portals.
• (crypto,bridgev2) Added option to encrypt reaction and reply metadata
  as per MSC4392.
• (bridgev2/login) Added default_value for user input fields.
• (bridgev2) Added interfaces to let the Matrix connector provide suggested
  HTTP client settings and to reset active connections of the network connector.
• (bridgev2) Added interface to let network connectors get the provisioning
  API HTTP router and add new endpoints.
• (event) Added blurhash field to Beeper link preview objects.
• (event) Added MSC4391 support for bot commands.
• (event) Dropped [MSC4332] support for bot commands.
• (client) Changed media download methods to return an error if the provided
  MXC URI is empty.
• (client) Stabilized support for [MSC4323].
• (bridgev2/matrix) Fixed GetEvent panicking when trying to decrypt events.
• (bridgev2) Fixed some deadlocks when room creation happens in parallel with
  a portal re-ID call.

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[renovate]

ℹ️ Artifact update notice

File name: go.mod

In order to perform the update(s) described in the table above, Renovate ran the go get command, which resulted in the following additional change(s):

• 6 additional dependencies were updated

Details:

Package	Change
go.mau.fi/util	v0.9.4 -> v0.9.5
golang.org/x/crypto	v0.46.0 -> v0.47.0
golang.org/x/exp	v0.0.0-20251209150349-8475f28825e9 -> v0.0.0-20260112195511-716be5621a96
golang.org/x/net	v0.48.0 -> v0.49.0
golang.org/x/sys	v0.39.0 -> v0.40.0
golang.org/x/text	v0.32.0 -> v0.33.0