Update ghcr.io/epics-containers/epics-gateways-developer Docker tag to v2026

[renovate]

This PR contains the following updates:

Package	Update	Change
ghcr.io/epics-containers/epics-gateways-developer	major	2025.11.1 → 2026.4.1

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Release Notes

epics-containers/epics-gateways (ghcr.io/epics-containers/epics-gateways-developer)

v2026.4.1

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What's Changed

• fix incorrect EPICS_PVA_BROADCAST_PORT by @​gilesknap in #​20

Full Changelog: epics-containers/epics-gateways@2026.3.18...2026.4.1

v2026.3.18

Compare Source

What's Changed

• Security context by @​gilesknap in #​19

Full Changelog: epics-containers/epics-gateways@2025.11.1...2026.3.18

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