Fix timezone mappings for European regions

[flanakin]

🛠️ Description

Fixed incorrect timezone mappings for European regions in the FinOps hubs managed exports trigger scheduling:

• northeurope: Changed from GMT Standard Time to W. Europe Standard Time
• uksouth: Changed from GMT Standard Time to Greenwich Mean Time
• ukwest: Changed from GMT Standard Time to Greenwich Mean Time

Fixes #1512

📋 Checklist

🔬 How did you test this change?

• 🤏 Lint tests
• 🤞 PS -WhatIf / az validate
• 👍 Manually deployed + verified
• 💪 Unit tests
• 🙌 Integration tests

🙋‍♀️ Do any of the following that apply?

• 🚨 This is a breaking change.
• 🤏 The change is less than 20 lines of code.

📑 Did you update docs/changelog.md?

• ✅ Updated changelog (required for dev PRs)
• ➡️ Will add log in a future PR (feature branch PRs only)
• ❎ Log not needed (small/internal change)

📖 Did you update documentation?

• ✅ Public docs in docs (required for dev)
• ✅ Public docs in docs-mslearn (required for dev)
• ✅ Internal dev docs in docs-wiki (required for dev)
• ✅ Internal dev docs in src (required for dev)
• ➡️ Will add docs in a future PR (feature branch PRs only)
• ❎ Docs not needed (small/internal change)

[Copilot]

Pull request overview

This pull request aims to fix incorrect timezone mappings for European regions in the FinOps hubs managed exports trigger scheduling, addressing issue #1512. The changes modify the timezone values for three Azure regions: North Europe (Ireland), UK South, and UK West.

Changes:

• Changed northeurope timezone from GMT Standard Time to W. Europe Standard Time
• Changed uksouth and ukwest timezones from GMT Standard Time to Greenwich Mean Time

[Copilot]

This change requires a changelog entry in docs-mslearn/toolkit/changelog.md. According to the repository's coding guidelines, every change must have a changelog entry with no exceptions for bug fixes, features, or improvements.

Since package.json shows version 13.0.0, this fix should be documented under a new "## v14" section (or "v13 Update 2" if this is a hotfix for v13) in the changelog under "### [FinOps hubs] v14" > "- Fixed" with an entry like:

• Fixed incorrect timezone mappings for European regions in managed exports (northeurope, uksouth, ukwest) to ensure Data Factory triggers start correctly ([[Hubs/AOE] Deal with duplicate recommendations ingestion #1512]).

This is particularly important because incorrect timezone mappings can cause Data Factory triggers to fail to start, which is a user-facing issue.

[Copilot]

The timezone change for northeurope from "GMT Standard Time" to "W. Europe Standard Time" may be incorrect. The North Europe Azure region is physically located in Ireland (Dublin), which observes the same timezone as the UK: UTC+0 in winter and UTC+1 in summer (British Summer Time/Irish Summer Time).

"W. Europe Standard Time" is Central European Time (UTC+1/+2), which is used by continental European countries like Netherlands (where westeurope is located), France, Germany, Norway, and Switzerland - all of which correctly use "W. Europe Standard Time" in this file.

Ireland and the UK should use the same timezone setting. If the original "GMT Standard Time" was causing issues (as mentioned in issue #1512), then both northeurope and the UK regions (uksouth, ukwest) should use the same corrected timezone value. Please verify the correct timezone for the Ireland/UK regions that resolves the issue mentioned in #1512.

[Copilot]

"Greenwich Mean Time" does not appear to be a standard Windows timezone ID. The standard Windows timezone ID for the UK/Ireland/Portugal timezone (UTC+0 with DST to UTC+1) is "GMT Standard Time".

Azure Data Factory schedule triggers use Windows timezone IDs. According to Microsoft documentation, valid timezone strings should match Windows timezone IDs. Please verify that "Greenwich Mean Time" is actually accepted by Azure Data Factory, or if it should be "GMT Standard Time" instead.

If "GMT Standard Time" was the issue mentioned in #1512, please clarify what the actual problem was and what the correct timezone string should be for UK regions.

Suggested change

	uksouth: 'Greenwich Mean Time'
	ukwest: 'Greenwich Mean Time'
	uksouth: 'GMT Standard Time'
	ukwest: 'GMT Standard Time'

[RolandKrummenacher]

@copilot Is this related to #1995 , too?

[Copilot]

@RolandKrummenacher I've opened a new pull request, #1999, to work on those changes. Once the pull request is ready, I'll request review from you.