tools: fix windows incompatibility with gdbgui>=0.14

gdbgui intentionally (https://github.com/cs01/gdbgui/pull/346) introduced dependencies that are incompatible with windows, and don't seem to have plans to resolve them anytime soon

Closes https://github.com/espressif/esp-idf/issues/5782
Closes https://github.com/espressif/esp-idf/issues/5787
Merges https://github.com/espressif/esp-idf/pull/5794

requirements.txt

@@ -11,7 +11,9 @@ future>=0.15.2
 cryptography>=2.1.4
 pyparsing>=2.0.3,<2.4.0
 pyelftools>=0.22
-gdbgui>=0.13.2.0
+gdbgui==0.13.2.0
+# 0.13.2.1 supports Python 3.6+ only
+# Windows is not supported since 0.14.0.0. See https://github.com/cs01/gdbgui/issues/348
 pygdbmi<=0.9.0.2
 # The pygdbmi required max version 0.9.0.2 since 0.9.0.3 is not copatible with latest gdbgui (>=0.13.2.0)
 reedsolo==1.5.3