fix(project-search): make search button of type submit

This commit should fix problem when searching for projects by pressing
enter doesn't work.

Author: jamacku

frontend/src/components/projects/ProjectSearch.tsx

@@ -114,6 +114,7 @@ const ProjectSearch = () => {
               <InputGroupItem>
                 <Button
                   icon={<SearchIcon />}
+                  type="submit"
                   variant="plain"
                   aria-label="Search"
                   onClick={goToProjectDetails}