upgrade r-base to R 4.0.4 released yesterday

library/r-base

@@ -2,8 +2,8 @@ Maintainers: Carl Boettiger <[email protected]> (@cboettig),
              Dirk Eddelbuettel <[email protected]> (@eddelbuettel)
 GitRepo: https://github.com/rocker-org/rocker.git
 
-Tags: 4.0.3, latest
+Tags: 4.0.4, latest
 Architectures: amd64, arm64v8, ppc64le, s390x
-GitCommit: f710db09bce5ed4670f80ff4bf5a6cc8f022b76b
-Directory: r-base/4.0.3
+GitCommit: 6e6287d3c991ee7ff35e7d0c99ba70babc196cdc
+Directory: r-base/4.0.4