build(docker): Bump dependencies (#1618)

Reduces exposure to CVEs.

**Testing**

`$ make build`

```
docker run --rm -it seldonio/mlserver:1.5.0.dev1 pip list | grep cryptography
```

Looks like the cryptography package isn't there?

It does have other packages, as expected:

```
$ docker run --rm -it seldonio/mlserver:1.5.0.dev1 pip list | grep huggingface
huggingface-hub                          0.21.3
mlserver-huggingface                     1.5.0.dev1
```

```
$ docker run --rm -it seldonio/mlserver:1.5.0.dev1 pip list | grep catboost
catboost                                 1.2.3
mlserver-catboost                        1.5.0.dev1
```

Dockerfile

@@ -1,7 +1,7 @@
 FROM python:3.10-slim AS wheel-builder
 SHELL ["/bin/bash", "-l", "-c"]
 
-ARG POETRY_VERSION="1.7.1"
+ARG POETRY_VERSION="1.8.1"
 
 COPY ./hack/build-wheels.sh ./hack/build-wheels.sh
 COPY ./mlserver ./mlserver
@@ -27,8 +27,8 @@ RUN pip install poetry==$POETRY_VERSION && \
 FROM registry.access.redhat.com/ubi9/ubi-minimal
 SHELL ["/bin/bash", "-c"]
 
-ARG PYTHON_VERSION=3.10.11
-ARG CONDA_VERSION=23.3.1
+ARG PYTHON_VERSION=3.10.12
+ARG CONDA_VERSION=23.11.0
 ARG MINIFORGE_VERSION=${CONDA_VERSION}-0
 ARG RUNTIMES="all"