Upgrade to debian Buster and disable python builder script

Upgrade to debian Buster slim (later to debian bullseye, crosstool-ng must be updated first, version 1.23 is not compatible with debian bullseye)
Disable python script (build-and-install-python.sh), the version of python in the repositories is recent enough for crosstool-ng 1.24 and above.
Changed from python to python3 for compatibility
Adding the manual launch of a github workflow

Signed-off-by: Bensuperpc <bensuperpc@gmail.com>

common.crosstool

@@ -16,12 +16,14 @@
 
 # Install Debian packages required for `ct-ng`.
 RUN apt-get update --yes && apt-get install --no-install-recommends --yes \
-  gawk \
-  gperf \
-  help2man \
-  python-dev \
-  texinfo \
-&& apt-get clean --yes
+    gawk \
+    gperf \
+    help2man \
+    python3-dev \
+    texinfo \
+    && apt-get clean autoclean --yes \
+    && apt-get autoremove --yes \
+    && rm -rf /var/lib/{apt,dpkg,cache,log}/
 
 ENV XCC_PREFIX=/usr/xcc
 
@@ -33,6 +35,7 @@ ENV XCC_PREFIX=/usr/xcc
 COPY \
   imagefiles/install-crosstool-ng-toolchain.sh \
   imagefiles/crosstool-ng-expat.patch \
+  imagefiles/Fix-error-with-bash-5-and-up.patch \
   crosstool-ng.config \
   /dockcross/