build: update to Go 1.21 (segmentio#426)

* .github: update to Go 1.21

Also update go.mod version and dependencies to latest versions.

* build: bump Dockerfile to 1.21.2 base image

---------

Co-authored-by: Alec Jacobs <[email protected]>

build(deps): bump github.com/aws/aws-sdk-go from 1.44.298 to 1.44.312 (…

…segmentio#411)

Bumps [github.com/aws/aws-sdk-go](https://github.com/aws/aws-sdk-go) from 1.44.298 to 1.44.312.
- [Release notes](https://github.com/aws/aws-sdk-go/releases)
- [Commits](aws/aws-sdk-go@v1.44.298...v1.44.312)

---
updated-dependencies:
- dependency-name: github.com/aws/aws-sdk-go
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build(deps): bump github.com/aws/aws-sdk-go from 1.44.289 to 1.44.298 (…

…segmentio#406)

Bumps [github.com/aws/aws-sdk-go](https://github.com/aws/aws-sdk-go) from 1.44.289 to 1.44.298.
- [Release notes](https://github.com/aws/aws-sdk-go/releases)
- [Commits](aws/aws-sdk-go@v1.44.289...v1.44.298)

---
updated-dependencies:
- dependency-name: github.com/aws/aws-sdk-go
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Update golang version to address security vulnerability CVE-2023-29404 (

segmentio#401)

Merge pull request segmentio#386 from segmentio/mckern/update-readme-…

…for-release

Update `README` for pending 2.13.0 release

feat: add options for import and delete normalization handling (segme…

…ntio#370)

* feat(utils): add utils package

* add normalization helpers for services and keys

* refactor: use utils package to normalize services and keys

* fix(import): add --normalize-keys option

* feat(delete): add --preserve-key option

enables deletion of keys that may have been written unnormalized

* docs: update README for new command flags

* docs: add import normalization example

* chore(delete): rename --preserve-key to --exact-key

fix: update golang version to 1.19 in dockerfile (segmentio#368)

fix: mitigate CVE-2022-27664 (segmentio#365)

fix: update release process to build chamber on go version 1.19.4 to mitigate CVE-2022-27664.

fix: update yaml package to resolve vulnerabilities (segmentio#353)

Remove test-dockerhub-login step from feature branches pipelines (seg…

…mentio#351)