docs: add changelog for 6.0.0 (#3019)

Signed-off-by: Milas Bowman <milas.bowman@docker.com>

docs/change-log.md

@@ -1,6 +1,44 @@
-Change log
+Changelog
 ==========
 
+6.0.0
+-----
+
+### Upgrade Notes
+- Minimum supported Python version is 3.7+
+- When installing with pip, the `docker[tls]` extra is deprecated and a no-op,
+  use `docker` for same functionality (TLS support is always available now)
+- Native Python SSH client (used by default / `use_ssh_client=False`) will now
+  reject unknown host keys with `paramiko.ssh_exception.SSHException`
+- Short IDs are now 12 characters instead of 10 characters (same as Docker CLI)
+
+### Features
+- Python 3.10 support
+- Automatically negotiate most secure TLS version
+- Add `platform` (e.g. `linux/amd64`, `darwin/arm64`) to container create & run
+- Add support for `GlobalJob` and `ReplicatedJobs` for Swarm
+- Add `remove()` method on `Image`
+- Add `force` param to `disable()` on `Plugin`
+
+### Bugfixes
+- Fix install issues on Windows related to `pywin32`
+- Do not accept unknown SSH host keys in native Python SSH mode
+- Use 12 character short IDs for consistency with Docker CLI
+- Ignore trailing whitespace in `.dockerignore` files
+- Fix IPv6 host parsing when explicit port specified
+- Fix `ProxyCommand` option for SSH connections
+- Do not spawn extra subshell when launching external SSH client
+- Improve exception semantics to preserve context
+- Documentation improvements (formatting, examples, typos, missing params)
+
+### Miscellaneous
+- Upgrade dependencies in `requirements.txt` to latest versions
+- Remove extraneous transitive dependencies
+- Eliminate usages of deprecated functions/methods
+- Test suite reliability improvements
+- GitHub Actions workflows for linting, unit tests, integration tests, and
+  publishing releases
+
 5.0.3
 -----
 

tests/Dockerfile

@@ -39,6 +39,6 @@ RUN --mount=type=cache,target=/root/.cache/pip \
     pip install -r test-requirements.txt
 
 COPY . /src
-ARG SETUPTOOLS_SCM_PRETEND_VERSION=99.0.0-docker
+ARG SETUPTOOLS_SCM_PRETEND_VERSION=99.0.0+docker
 RUN --mount=type=cache,target=/root/.cache/pip \
     pip install -e .