Bump verif/core-v-verif from `6779193` to `76b887f` #8

	# Copyright 2021 OpenHW Group
	# Licensed under the Apache License, Version 2.0, see LICENSE for details.
	# SPDX-License-Identifier: Apache-2.0

	# Run functional regression checks
	name: ci
	on: [push, pull_request]

	jobs:
	riscv-tests:
	name: riscv-tests
	runs-on: ubuntu-latest
	strategy:
	matrix:
	testcase: [asm-tests, mul, amo, fp, benchmarks]
	target: [cv64a6_imafdc_sv39, cv64a6_imafdc_sv39_wb]
	env:
	RISCV: /riscv
	steps:
	- uses: actions/checkout@v2
	with:
	submodules: recursive
	- name: Prepare
	run: ci/setup.sh
	- name: run tests
	run: make run-${{ matrix.testcase}}-verilator target=${{ matrix.target }}

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