fix(tests): fix tests for the generate command (vectordotdev#18383)

This commit adds missing conditional compilation features to the tests, which fail when any of the
`demo_logs` source, the `remap` transform or the `console` sink are not compiled.

Signed-off-by: Hugo Hromic <hhromic@gmail.com>

src/generate.rs

@@ -643,6 +643,11 @@ mod tests {
         );
     }
 
+    #[cfg(all(
+        feature = "sources-demo_logs",
+        feature = "transforms-remap",
+        feature = "sinks-console"
+    ))]
     #[test]
     fn generate_basic_yaml() {
         let opts = Opts {
@@ -695,6 +700,11 @@ mod tests {
         );
     }
 
+    #[cfg(all(
+        feature = "sources-demo_logs",
+        feature = "transforms-remap",
+        feature = "sinks-console"
+    ))]
     #[test]
     fn generate_basic_json() {
         let opts = Opts {