Update versions

Author: jimhester

DESCRIPTION

@@ -15,7 +15,7 @@ URL: https://devtools.r-lib.org/, https://github.com/r-lib/devtools
 BugReports: https://github.com/r-lib/devtools/issues
 Depends: 
     R (>= 3.0.2),
-    usethis (>= 1.5.1)
+    usethis (>= 1.6.0)
 Imports: 
     callr (>= 3.4.3),
     cli (>= 2.0.2),
@@ -49,15 +49,15 @@ Suggests:
     bitops (>= 1.0-6),
     curl (>= 4.3),
     evaluate (>= 0.14),
-    foghorn (>= 1.1.4),
+    foghorn (>= 1.1.5),
     gmailr (>= 1.0.0),
     knitr (>= 1.28),
     lintr (>= 2.0.1),
     mockery (>= 0.4.2),
     pingr (>= 2.0.0),
     MASS,
-    pkgdown (>= 1.5.0),
-    Rcpp (>= 1.0.4),
+    pkgdown (>= 1.5.1),
+    Rcpp (>= 1.0.4.6),
     rhub (>= 1.1.1),
     rmarkdown (>= 2.1),
     spelling (>= 2.1),