[releng] Bump version to 2026.9.5 - #2564

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

getTargetObjectLabel() in org.eclipse.sirius.components.diagrams.Node has been deprecated and marked for removal

getTargetObjectLabel() in org.eclipse.sirius.components.diagrams.Node has been deprecated and marked for removal

org.eclipse.syson.services.diagrams.api.IGivenDiagramReference in org.eclipse.syson.services.diagrams.api has been deprecated and marked for removal

nodeWithTargetObjectLabel(java.lang.String) in org.eclipse.sirius.components.diagrams.tests.navigation.DiagramNavigator has been deprecated and marked for removal

nodeWithTargetObjectLabel(java.lang.String) in org.eclipse.sirius.components.diagrams.tests.navigation.DiagramNavigator has been deprecated and marked for removal

hasTargetObjectLabel(java.lang.String) in org.eclipse.sirius.components.diagrams.tests.assertions.NodeAssert has been deprecated and marked for removal

getTargetObjectLabel() in org.eclipse.sirius.components.diagrams.Node has been deprecated and marked for removal

edgeWithTargetObjectLabel(java.lang.String) in org.eclipse.sirius.components.diagrams.tests.navigation.DiagramNavigator has been deprecated and marked for removal

getKind(java.lang.Object) in org.eclipse.sirius.components.core.api.IIdentityService has been deprecated and marked for removal

getKind(java.lang.Object) in org.eclipse.sirius.components.core.api.IIdentityService has been deprecated and marked for removal