Bump core from 3bd6a87 to ecaa62c

Bumps [core](https://github.com/microsoft/typespec) from `3bd6a87` to `ecaa62c`.
- [Release notes](https://github.com/microsoft/typespec/releases)
- [Commits](microsoft/typespec@3bd6a87...ecaa62c)

---
updated-dependencies:
- dependency-name: core
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>