Update buildpack-deps

Changes:

- https://github.com/docker-library/buildpack-deps/commit/7780a9d: Merge pull request https://github.com/docker-library/buildpack-deps/pull/121 from vicamo/for-upstream/add-ubuntu-impish
- https://github.com/docker-library/buildpack-deps/commit/fae040f: Add Ubuntu Impish

library/buildpack-deps

@@ -124,6 +124,21 @@ Architectures: amd64, arm32v7, arm64v8, ppc64le, s390x
 GitCommit: 98a5ab81d47a106c458cdf90733df0ee8beea06c
 Directory: ubuntu/hirsute
 
+Tags: impish-curl, 21.10-curl
+Architectures: amd64, arm32v7, arm64v8, ppc64le, s390x
+GitCommit: fae040f3db68991f178f0a9631a03ca9837f5647
+Directory: ubuntu/impish/curl
+
+Tags: impish-scm, 21.10-scm
+Architectures: amd64, arm32v7, arm64v8, ppc64le, s390x
+GitCommit: fae040f3db68991f178f0a9631a03ca9837f5647
+Directory: ubuntu/impish/scm
+
+Tags: impish, 21.10
+Architectures: amd64, arm32v7, arm64v8, ppc64le, s390x
+GitCommit: fae040f3db68991f178f0a9631a03ca9837f5647
+Directory: ubuntu/impish
+
 Tags: xenial-curl, 16.04-curl
 Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
 GitCommit: 93d2a6f64abe6787b7dd25c7d5322af1fa2e3f55