chore(vscode): update to 1.53.2

These conflicts will be resolved in the following commits. We do it this way so
that PR review is possible.

lib/vscode/extensions/r/test/colorize-fixtures/test.r

@@ -1,24 +0,0 @@
-# © Microsoft. All rights reserved.
-
-#' Add together two numbers.
-#'
-#' @param x A number.
-#' @param y A number.
-#' @return The sum of \code{x} and \code{y}.
-#' @examples
-#' add(1, 1)
-#' add(10, 1)
-add <- function(x, y) {
-  x + y
-}
-
-add(1, -2, 2.0)
-add(1.0e10, 2.0e10)
-
-paste("one", NULL)
-paste(NA, 'two')
-
-paste("multi-
-      line",
-      'multi-
-      line')