ci(workflows): update Go version configuration to use `oldstable` #90

	name: benchmark

	on:
	pull_request:

	jobs:
	benchmark:
	name: Benchmark
	runs-on: ubuntu-latest
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	steps:
	- name: Check out source code
	uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

	- name: Set up Go
	uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v6.3.0
	with:
	go-version-file: go.mod

	- name: Set up deps
	run: make depsdev

	- name: Check out source code (main)
	uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
	with:
	ref: main
	path: main

	- name: Run benchmark (main)
	run: make benchmark
	working-directory: main

	- name: Run octocov (main)
	uses: k1LoW/octocov-action@73d561f65d59e66899ed5c87e4621a913b5d5c20 # v1.5.0
	with:
	config: .octocov.benchmark.main.yml
	env:
	OCTOCOV_GITHUB_REF: refs/heads/main
	OCTOCOV_GITHUB_SHA: none
	OCTOCOV_CUSTOM_METRICS_BENCHMARK: main/custom_metrics_benchmark.json

	- name: Run benchmark
	run: make benchmark

	- name: Run octocov
	uses: k1LoW/octocov-action@73d561f65d59e66899ed5c87e4621a913b5d5c20 # v1.5.0
	with:
	config: .octocov.benchmark.yml
	env:
	OCTOCOV_CUSTOM_METRICS_BENCHMARK: custom_metrics_benchmark.json

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