chore: Add Remotes for automatic pkgdepends installs on GH actions

DESCRIPTION

@@ -21,6 +21,9 @@ Suggests:
     simplerspec,
     testthat (>= 3.0.0),
     tibble
+Remotes: 
+    github::spectral-cockpit/opusreader2,
+    github::philipp-baumann/simplerspec,
 Encoding: UTF-8
 LazyData: true
 Roxygen: list(markdown = TRUE)