Update prom/alertmanager Docker tag to v0.29.0

[renovate]

This PR contains the following updates:

Package	Update	Change
prom/alertmanager	minor	v0.27.0 -> v0.29.0

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Release Notes

prometheus/alertmanager (prom/alertmanager)

v0.29.0: 0.29.0 / 2025-11-01

Compare Source

• [FEATURE] Add incident.io notifier. #​4372
• [FEATURE] Add monospace message formatting. #​4362
• [FEATURE] Add ability to customize interval for maintenance to run. #​4541
• [ENHANCEMENT] Update Jira notifier to support both Jira cloud API v3 and Jira datacenter API v2. #​4542
• [ENHANCEMENT] Increase mixin rate intervals for alert FailedToSendAlerts. #​4206
• [ENHANCEMENT] Make /alertmanager group writable in docker image. #​4469
• [BUGFIX] Fix logged notification count on error in notify. #​4323
• [BUGFIX] Fix docker image permissions path. #​4288
• [BUGFIX] Fix error handling in template rendering for Telegram. #​4353
• [BUGFIX] Fix duplicate other in error messages for config. #​4366
• [BUGFIX] Fix logic that considers an alert reopened in Jira. #​4478
• [BUGFIX] Fix Jira issue count #​4615

v0.28.1: 0.28.1 / 2025-03-07

Compare Source

• [ENHANCEMENT] Improved performance of inhibition rules when using Equal labels. #​4119
• [ENHANCEMENT] Improve the documentation on escaping in UTF-8 matchers. #​4157
• [ENHANCEMENT] Update alertmanager_config_hash metric help to document the hash is not cryptographically strong. #​4210
• [BUGFIX] Fix panic in amtool when using --verbose. #​4218
• [BUGFIX] Fix templating of channel field for Rocket.Chat. #​4220
• [BUGFIX] Fix rocketchat_configs written as rocket_configs in docs. #​4217
• [BUGFIX] Fix usage for --enable-feature flag. #​4214
• [BUGFIX] Trim whitespace from OpsGenie API Key. #​4195
• [BUGFIX] Fix Jira project template not rendered when searching for existing issues. #​4291
• [BUGFIX] Fix subtle bug in JSON/YAML encoding of inhibition rules that would cause Equal labels to be omitted. #​4292
• [BUGFIX] Fix header for slack_configs in docs. #​4247
• [BUGFIX] Fix weight and wrap of Microsoft Teams notifications. #​4222
• [BUGFIX] Fix format of YAML examples in configuration.md. #​4207

v0.28.0: 0.28.0 / 2025-01-15

Compare Source

• [CHANGE] Templating errors in the SNS integration now return an error. #​3531 #​3879
• [CHANGE] Adopt log/slog, drop go-kit/log #​4089
• [FEATURE] Add a new Microsoft Teams integration based on Flows #​4024
• [FEATURE] Add a new Rocket.Chat integration #​3600
• [FEATURE] Add a new Jira integration #​3590 #​3931
• [FEATURE] Add support for GOMEMLIMIT, enable it via the feature flag --enable-feature=auto-gomemlimit. #​3895
• [FEATURE] Add support for GOMAXPROCS, enable it via the feature flag --enable-feature=auto-gomaxprocs. #​3837
• [FEATURE] Add support for limits of silences including the maximum number of active and pending silences, and the maximum size per silence (in bytes). You can use the flags --silences.max-silences and --silences.max-silence-size-bytes to set them accordingly #​3852 #​3862 #​3866 #​3885 #​3886 #​3877
• [FEATURE] Muted alerts now show whether they are suppressed or not in both the /api/v2/alerts endpoint and the Alertmanager UI. #​3793 #​3797 #​3792
• [ENHANCEMENT] Add support for content, username and avatar_url in the Discord integration. content and username also support templating. #​4007
• [ENHANCEMENT] Only invalidate the silences cache if a new silence is created or an existing silence replaced - should improve latency on both GET api/v2/alerts and POST api/v2/alerts API endpoint. #​3961
• [ENHANCEMENT] Add image source label to Dockerfile. To get changelogs shown when using Renovate #​4062
• [ENHANCEMENT] Build using go 1.23 #​4071
• [ENHANCEMENT] Support setting a global SMTP TLS configuration. #​3732
• [ENHANCEMENT] The setting room_id in the WebEx integration can now be templated to allow for dynamic room IDs. #​3801
• [ENHANCEMENT] Enable setting message_thread_id for the Telegram integration. #​3638
• [ENHANCEMENT] Support the since and humanizeDuration functions to templates. This means users can now format time to more human-readable text. #​3863
• [ENHANCEMENT] Support the date and tz functions to templates. This means users can now format time in a specified format and also change the timezone to their specific locale. #​3812
• [ENHANCEMENT] Latency metrics now support native histograms. #​3737
• [ENHANCEMENT] Add full width to adaptive card for msteamsv2 #​4135
• [ENHANCEMENT] Add timeout option for webhook notifier. #​4137
• [ENHANCEMENT] Update config to allow showing secret values when marshaled #​4158
• [ENHANCEMENT] Enable templating for Jira project and issue_type #​4159
• [BUGFIX] Fix the SMTP integration not correctly closing an SMTP submission, which may lead to unsuccessful dispatches being marked as successful. #​4006
• [BUGFIX] The ParseMode option is now set explicitly in the Telegram integration. If we don't HTML tags had not been parsed by default. #​4027
• [BUGFIX] Fix a memory leak that was caused by updates silences continuously. #​3930
• [BUGFIX] Fix hiding secret URLs when the URL is incorrect. #​3887
• [BUGFIX] Fix a race condition in the alerts - it was more of a hypothetical race condition that could have occurred in the alert reception pipeline. #​3648
• [BUGFIX] Fix a race condition in the alert delivery pipeline that would cause a firing alert that was delivered earlier to be deleted from the aggregation group when instead it should have been delivered again. #​3826
• [BUGFIX] Fix version in APIv1 deprecation notice. #​3815
• [BUGFIX] Fix crash errors when using url_file in the Webhook integration. #​3800
• [BUGFIX] fix Route.ID() returns conflicting IDs. #​3803
• [BUGFIX] Fix deadlock on the alerts memory store. #​3715
• [BUGFIX] Fix amtool template render when using the default values. #​3725
• [BUGFIX] Fix webhook_url_file for both the Discord and Microsoft Teams integrations. #​3728 #​3745
• [BUGFIX] Fix wechat api link #​4084
• [BUGFIX] Fix build info metric #​4166
• [BUGFIX] Fix UTF-8 not allowed in Equal field for inhibition rules #​4177

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