fix(agent): fix Lumen detection (#838)

Remove 'bootstrap/app.php' from the list of signature files used to detect 
Laravel - Laravel is detected with 'illuminate/foundation/application.php'
for all supported Laravel versions: 6, 7, 8, 9 and 10.
Using 'bootstrap/app.php' causes Laravel to be detected before Lumen
can be detected because 'bootstrap/app.php' is the second file loaded
when Lumen based app is handling the request and this results in Lumen
app being detected as Laravel.

agent/php_execute.c

@@ -381,8 +381,6 @@ static const nr_framework_table_t all_frameworks[] = {
      NR_FW_LARAVEL}, /* 5.0.15-5.0.x */
     {"Laravel", "laravel", NR_PSTR("bootstrap/cache/compiled.php"), 0, nr_laravel_enable,
      NR_FW_LARAVEL}, /* 5.1.0-x */
-    {"Laravel", "laravel", NR_PSTR("bootstrap/app.php"), 0, nr_laravel_enable,
-     NR_FW_LARAVEL}, /* 8+ */
 
     {"Lumen", "lumen", NR_PSTR("lumen-framework/src/helpers.php"), 0, nr_lumen_enable,
      NR_FW_LUMEN},
@@ -857,6 +855,9 @@ static nrframework_t nr_try_detect_framework(
       }
 
       nr_framework_log("detected framework", frameworks[i].framework_name);
+      nrl_verbosedebug(
+          NRL_FRAMEWORK, "framework '%s' detected with %s, which ends with %s",
+          frameworks[i].framework_name, filename, frameworks[i].file_to_check);
 
       frameworks[i].enable(TSRMLS_C);
       detected = frameworks[i].detected;