Character `>` is not escaped in generator expressions

The following yml node:
```
define:
  - RANDOM_CONFIG_FILE: \"<random_config.h>\"
```
wrongly appears in the command line as this:
```
-D> -DRANDOM_CONFIG_FILE="\"<random_config.h\""
```
The character `>` when used inside CMake generator expressions should be escaped by `$<ANGLE-R>`:
https://cmake.org/cmake/help/latest/manual/cmake-generator-expressions.7.html#genex:ANGLE-R