Add dependency version management

[t92549]

The version numbers of the helm charts are managed automatically with a script:

gaffer-docker/kubernetes/gaffer-road-traffic/Chart.yaml

Line 19 in 41f9f51

version: 0.17.1 # managed version

However, the versions of all the dependencies across the Dockerfiles, docker-compose .env files, and helm charts, are not managed automatically and must be updated manually before a gaffer-docker release:

gaffer-docker/docker/gaffer/Dockerfile

Lines 18 to 24 in 377655a

	ARG BASE_IMAGE_NAME=gchq/accumulo
	ARG BASE_IMAGE_TAG=1.9.3
	FROM ${BUILDER_IMAGE_NAME}:${BUILDER_IMAGE_TAG} as builder
	ARG GAFFER_VERSION=1.21.1
	ARG GAFFER_LIBS=bitmap-library,sketches-library,time-library

gaffer-docker/docker/gaffer/.env

Lines 1 to 4 in 377655a

	GAFFER_VERSION=1.21.1
	GAFFER_TOOLS_VERSION=1.21.1
	ACCUMULO_VERSION=1.9.3
	HADOOP_VERSION=3.2.1

gaffer-docker/kubernetes/gaffer/values.yaml

Lines 56 to 58 in 377655a

	image:
	repository: gchq/gaffer-rest
	tag: 1.21.1

Not only is this tedious for releases, requiring manual update commits, but it is also error-prone as this manual process could be done wrong, or different versions could be inconsistent with each other.

Therefore, a way of managing these versions should be added so it can be done automatically at time of release, and safely.

[t92549]

#211 ensured that the images that are built, tested and released are the ones in the docker/gaffer-pyspark-notebook/.env file, as well as automatically ensuring the helm chart versions are correct.
This is a step forward but manual commits are still required to update the versions in the Dockerfiles and docker-compose files.