Update README.md

Added new posts from GS and Nubank

README.md

@@ -541,6 +541,12 @@ Numerous organizations frequently share their insights and expertise, encompassi
 
 ### Blog Posts
 
+* [SecDb Observability Journey](https://developer.gs.com/blog/posts/secdb-observability-journey)
+* [Chaos Testing an Application on AWS](https://developer.gs.com/blog/posts/chaos-testing-an-application-on-aws)
+* [Forecasting Capacity Outages Using Machine Learning to Bolster Application Resiliency](https://developer.gs.com/blog/posts/forecasting-capacity-outages-using-machine-learning-to-bolster-application-resiliency)
+* [Providing 99.9% Availability and Sub-Second Response Times with Sybase IQ Multiplexes by Using HAProxy](https://developer.gs.com/blog/posts/providing-999-availability-and-sub-second-response-times-with-sybase-iq-multiplexes-by-using-haproxy)
+* [Building Multi-Region Resiliency with Amazon RDS and Amazon Aurora](https://developer.gs.com/blog/posts/building-multi-region-resiliency-with-amazon-rds-and-amazon-aurora)
+* [Enabling Highly Available Trino Clusters at Goldman Sachs](https://developer.gs.com/blog/posts/enabling-highly-available-trino-clusters-at-goldman-sachs)
 * [Observability at Scale](https://developer.gs.com/blog/posts/observability-at-scale)
 * [Enabling Highly Available Trino Clusters at Goldman Sachs](https://developer.gs.com/blog/posts/enabling-highly-available-trino-clusters-at-goldman-sachs)
 * [Infrastructure and the Command Chain Pattern](https://developer.gs.com/blog/posts/infrastructure-and-command-chain-pattern)
@@ -958,6 +964,7 @@ Numerous organizations frequently share their insights and expertise, encompassi
 
 ### Blog Posts
 
+* [Engineering operational excellence, a case of continuous improvement](https://building.nubank.com.br/engineering-operational-excellence-case-continuous-improvement/)
 * [How we deal with technical incidents](https://building.nubank.com.br/how-we-deal-with-incidents/)
 * [How we do On-Call Rotations at Nubank](https://building.nubank.com.br/how-we-do-on-call-rotations-at-nubank/)
 * [How we scale our data platform efficiently and reliably](https://building.nubank.com.br/distributing-the-data-team-to-boost-innovation-reliably/)