Don't be over dramatic about missing probe-rs if it's not needed (#263)

* Don't be over dramatic about missing probe-rs if it's not needed

* Adjust test

Author: bjoernQ

src/check.rs

@@ -138,7 +138,7 @@ fn create_check_results(
         &mut result,
     );
     requirements_unsatisfied |= format_result(
-        false,
+        !probe_rs_required,
         "probe-rs",
         check_version(probers_version, 0, 25, 0),
         format!(
@@ -442,7 +442,7 @@ Checking installed versions
 Checking installed versions
 🆗 Rust (nightly): 1.85.0
 🆗 espflash: 3.3.0
-❌ probe-rs (not found - see https://probe.rs/docs/getting-started/installation/ for how to install (suggested))
+💡 probe-rs (not found - see https://probe.rs/docs/getting-started/installation/ for how to install (suggested))
 🆗 esp-config: 0.5.0
 "
             .to_string()