RUF005: Use the unpacking operator to concatenate collections

[seisman]

Description of proposed changes

This PR fixes some errors reported by ruff's RUF005 rule. See https://docs.astral.sh/ruff/rules/collection-literal-concatenation/ for the explanations about RUF005.

The changes in this PR are made by running the following command:

ruff check pygmt examples --extend-select=RUF005 --unsafe-fixes --fix

[yvonnefroehlich]

So far, the related group of rules RUF (please see the last bullet point of the list in #2741 (comment)) is not enabled in the project.toml at:

pygmt/pyproject.toml

Lines 100 to 116 in d460b07

	[tool.ruff.lint]
	select = [
	"B", # flake8-bugbear
	"E", # pycodestyle
	"F", # pyflakes
	"FA", # flake8-future-annotations
	"FLY", # flynt
	"I", # isort
	"ISC", # flake8-implicit-str-concat
	"NPY", # numpy
	"PD", # pandas-vet
	"PIE", # flake8-pie
	"PL", # pylint
	"SIM", # flake8-simplify
	"UP", # pyupgrade
	"W", # pycodestyle warnings
	]

Is this because the required adjustments to follow all RUF related rules are spread over multiple PRs (see also PR #2871) and we will enable it in the last PR for this group of rules? Or do we only want to follow RUF005 and RUF010 (I did not look up the other rules in detail)?

[seisman]

yes, I plan to enable the RUL rules in a later PR.