Update cross-repo angular dependencies to cdaaa15

Editor assessment

Cross-repo dependency rolls are a maintenance fixture in this repository, and the header handles them consistently: build type, no scope, subject naming the target digest cdaaa15. That is precise enough for tooling and for scanning git log. The body defaults to 'See associated pull request for more information,' which keeps the message structurally valid—a header, a blank line, a body, a PR footer—while contributing zero standalone context. Whether the roll fixed an issue, pulled in a specific fix, or was routine drift is unknowable from the log alone; the digest shorthand also assumes readers know which repos are involved. For automated snapshot updates this is defensible, but a one-line summary of what the new digest brings would make these commits worth more than a shrug in archaeology.