v0.40.0

🛑 Breaking changes 🛑

• tencentcloudlogserviceexporter: change Endpoint to Region to simplify configuration (#6135)

🚀 New components 🚀

• Add memcached receiver (#5839)

🧰 Bug fixes 🧰

• Fix token passthrough for HEC (#5435)
• datadogexporter: Fix missing resource attributes default mapping when resource_attributes_as_tags: false (#6359)
• tanzuobservabilityexporter: Log and report missing metric values. (#5835)
• mongodbatlasreceiver: Fix metrics metadata (#6395)

💡 Enhancements 💡

• awsprometheusremotewrite exporter: Improve error message when failing to sign request
• mongodbatlas: add metrics (#5921)
• healthcheckextension: Add path option (#6111)
• Set unprivileged user to container image (#6380)
• k8sclusterreceiver: Add allocatable type of metrics (#6113)
• observiqexporter: Allow Dialer timeout to be configured (#5906)
• routingprocessor: remove broken debug log fields (#6373)
• prometheusremotewriteexporter: Add exemplars support (#5578)