bump travis ci version

ref #306

.travis.yml

@@ -1,9 +1,8 @@
 # Travis's native R Image (http://docs.travis-ci.com/user/languages/r/)
-sudo:                false
 language:            r
 cache:               packages
 warnings_are_errors: true
-dist:                trusty
+dist:                focal
 r:
   - release
 # - devel

DESCRIPTION

@@ -6,7 +6,7 @@ Description: Encapsulates functions to streamline calls from R to the REDCap
     University.  The Application Programming Interface (API) offers an avenue
     to access and modify data programmatically, improving the capacity for
     literate and reproducible programming.
-Version: 0.11.0
+Version: 0.11.0.9000
 Authors@R: c(person("Will", "Beasley", role = c("aut", "cre"), email =
     "wibeasley@hotmail.com", comment = c(ORCID = "0000-0002-5613-5006")),
     person("David", "Bard", role = "ctb"),
@@ -27,7 +27,7 @@ Depends:
     R(>= 3.5.0)
 Imports:
     checkmate (>= 2.0),
-    dplyr (>= 0.8.0),
+    dplyr (>= 1.0),
     httr (>= 1.4.0),
     magrittr (>= 1.5),
     methods,