Update python version in build files

Author: Slavek Kabrda

.gitlab-ci.yml

@@ -3,7 +3,7 @@ stages:
   - deploy
 
 variables:
-  PYTHON_VERSION: "3.9.16"
+  PYTHON_VERSION: "3.9.17"
 
 .manual:
   - when: manual

build.bat

@@ -7,7 +7,7 @@ set builddir=c:\mnt\PCBuild
 set outdir=c:\mnt\build-out
 set py_version_major=3
 set py_version_minor=9
-set py_version_bugfix=16
+set py_version_bugfix=17
 set py_version_major_minor=%py_version_major%.%py_version_minor%
 set py_version=%py_version_major_minor%.%py_version_bugfix%
 set py_dll_major_minor=%py_version_major%%py_version_minor%