feat: core-seal date current until 2026 (#119)

user-guide/docs/datadepotrepo/about.md

@@ -4,7 +4,7 @@
 The mission of the Data Depot Repository (DDR) is to provide data producers with an open repository to safely store, share, and curate natural hazards research data, ensuring its permanent publication, distribution, and impact evaluation. DDR enables users to discover, search, access, and reuse data, thereby accelerating research discoveries. DDR is a component of the DesignSafe cyberinfrastructure which represents a comprehensive open science research environment that provides cloud-based tools to manage, analyze, understand, and publish critical data to understand the impacts of natural hazards. DesignSafe is part of the NSF-supported [Natural Hazards Engineering Research Infrastructure (NHERI)](https://designsafe-ci.org/about/), and aligns with its mission to provide the  natural hazards research community with open access, shared resources aimed at supporting civil and social infrastructures prior to, during, and following natural disasters.
 
 ## History
-Founded in 2016, the DDR was established as an [open-access](https://www.openaccess.nl/en/what-is-open-access) data repository. Supported by the [National Science Foundation](https://www.nsf.gov/), it preserves and provides access to natural hazards research data including [legacy datasets](https://designsafe-ci.org/data/browser/public/nees.public) dating back to 2005 generated under the NSF-supported Network for Earthquake Engineering Simulation (NEES), the predecessor to NHERI. Since 2022 DDR is a [Core Trust Seal Certified Data Repository](https://www.coretrustseal.org/wp-content/uploads/2023/01/20230126-designsafe_final.pdf) ensuring the sustainability and trustworthiness of its infrastructure and the data it preserves.
+Founded in 2016, the DDR was established as an [open-access](https://www.openaccess.nl/en/what-is-open-access) data repository. Supported by the [National Science Foundation](https://www.nsf.gov/), it preserves and provides access to natural hazards research data including [legacy datasets](https://designsafe-ci.org/data/browser/public/nees.public) dating back to 2005 generated under the NSF-supported Network for Earthquake Engineering Simulation (NEES), the predecessor to NHERI. Since 2022 DDR is a [Core Trust Seal Certified Data Repository](https://www.coretrustseal.org/wp-content/uploads/2023/01/20230126-designsafe_final.pdf) ensuring the sustainability and trustworthiness of its infrastructure and the data it preserves. The certification is current until 2026.
 
 ## Governance 
 DDR governance aims to ensure effective and secure data curation and publication in compliance with relevant regulations and best practices, supporting the discovery, access, preservation and reuse of critical research data. Governance is managed by the DesignSafe management team, which is responsible for setting and updating policies, recommending best practices, overseeing technical development, and prioritizing key activities and services encompassing datasets, systems, and processes associated with the DDR. All activities are driven by the research community of practice operationalized by the NHERI network, and informed by digital library standards. The broad organizational structure under which the DDR operates is [here](https://designsafe-ci.org/about/designsafe/).