test: enable setting min oracle version on tests

[reubeno]

This enables us to tag certain tests as only being applicable when a given minimum version of the oracle (i.e., bash) is installed on the test system. This is practically useful since we now have a few tests that pass when comparing brush to bash only when bash is >= 5.2.

[github-actions]

Test Results

  2 files    8 suites   52s ⏱️
424 tests 424 ✅ 0 💤 0 ❌
848 runs  848 ✅ 0 💤 0 ❌

Results for commit 3b6bf06.

[github-actions]

Performance Benchmark Report

Benchmark name	Baseline (μs)	Test/PR (μs)	Delta (μs)	Delta %
expand_one_string	3.36 μs	3.36 μs	-0.00 μs	⚪ Unchanged
instantiate_shell	59.29 μs	59.48 μs	0.19 μs	⚪ Unchanged
instantiate_shell_with_init_scripts	26946.94 μs	25609.38 μs	-1337.56 μs	🟢 -4.96%
parse_bash_completion	5690.30 μs	5769.97 μs	79.67 μs	🟠 +1.40%
parse_sample_script	9.09 μs	9.21 μs	0.12 μs	🟠 +1.26%
run_echo_builtin_command	92.17 μs	90.55 μs	-1.62 μs	⚪ Unchanged
run_one_builtin_command	113.57 μs	111.86 μs	-1.71 μs	⚪ Unchanged
run_one_external_command	1871.18 μs	1852.33 μs	-18.85 μs	⚪ Unchanged
run_one_external_command_directly	966.15 μs	958.98 μs	-7.17 μs	⚪ Unchanged

Code Coverage Report: Only Changed Files listed

Package	Base Coverage	New Coverage	Difference
brush-core/src/jobs.rs	🔴 42.42%	🔴 37.23%	🔴 -5.19%
Overall Coverage	🟢 76.21%	🟢 76.11%	🔴 -0.1%

Minimum allowed coverage is 70%, this run produced 76.11%