Makefile: bump version to v8.0.0-master (#10461)

ref #7488

Makefile

@@ -101,7 +101,7 @@ MAKE_FILES = $(shell find . \( -name 'Makefile' -o -name '*.mk' \) -print)
 
 RELEASE_VERSION =
 ifeq ($(RELEASE_VERSION),)
-	RELEASE_VERSION := v7.6.0-master
+	RELEASE_VERSION := v8.0.0-master
 	release_version_regex := ^v[0-9]\..*$$
 	release_branch_regex := "^release-[0-9]\.[0-9].*$$|^HEAD$$|^.*/*tags/v[0-9]\.[0-9]\..*$$"
 	ifneq ($(shell git rev-parse --abbrev-ref HEAD | grep -E $(release_branch_regex)),)
@@ -373,7 +373,7 @@ unit_test_coverage:
 
 data-flow-diagram: docs/data-flow.dot
 	dot -Tsvg docs/data-flow.dot > docs/data-flow.svg
-	
+
 generate_mock: ## Generate mock code.
 generate_mock: tools/bin/mockgen
 	scripts/generate-mock.sh