WASHINGTON — Federal authorities have declined to charge the husband of Labor Secretary Lori Chavez-DeRemer with crimes related to the alleged sexual assault of two female staffers at the department’s headquarters in Washington, DC, officials and sources told The Post. At least one of the alleged incidents occurred when Dr. Shawn DeRemer was caught on an office security camera giving a prolonged hug to one of the women last December, according to sources. But prosecutors in the DC US Attorney’s