Alternate:

In-case your don't want to switch repositories you can setup in your local (or AWS S3 or any other cloud):
Download jar from : Maven Repo [ Choose suitable version, for this question 0.7.0-spark2.4-s_2.11 ]

and move the downloaded file to :
C:/Users/[Your PC Name]/.m2/repository/graphframes/graphframes/0.7.0-spark2.4-s_2.11/[ downloaded jar file ]
[ create folders if these aren't present : keep similar structure ]
just clean and install.