autobuilder: move vendor check before dependency installation check
autobuilder: move vendor check before dependency installation check

This means dependency installation is still attempted when a vendor
directory is inconsistent.

github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql-go,github/codeql-go,github/codeql,github/codeql-go,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql-go,github/codeql