[BUG] prettier_version parameter is not followed and latest version used

[mabeett]

What exactly happened?

Steps to reproduce the behavior:

1. Go to your creyD/prettier_action invocation.
2. Add the parameter prettier_version with a specific value 3.6.2 for instance.
3. Launch the workflow.
4. In the logs you will see the output for the latest prettier version, now 3.7.1.

What should've happened?

Version 3.6.2 for prettier should be executed.

How did it look?

The output indicates

 Prettifying files...
Files:
npm warn exec The following package was not found and will be installed: prettier@3.7.1

[chachra]

yep, happened to us as well, since prettier 3.8.0 came out also and it starts failing since we thought we had pinned an earlier version in it and also in our local package.json prettier version!

[Nothing4You]

this seems to be caused by #145.
prettier is first installed via npm but then the actual execution is done via npx:

prettier_action/entrypoint.sh

Lines 46 to 48 in 8c18391

	echo "Installing prettier..."
	npm install --silent prettier@$INPUT_PRETTIER_VERSION

prettier_action/entrypoint.sh

Lines 67 to 69 in 8c18391

	echo "Prettifying files..."
	echo "Files:"
	npx prettier $INPUT_PRETTIER_OPTIONS \