CI: CentOS Stream 9 has renamed python36 to python3

Author: ppisar

.ci/centos/Dockerfile.deps.tmpl

@@ -32,7 +32,9 @@ ifelse(eval(cosrelease == 8), 1, `dnl
 ifelse(eval(cosrelease < 9), 1, `dnl
         python2-devel \
         python2-six \
+        python36-devel \
 ',`dnl
+        python3-devel \
         python3-six \
 ')dnl
 ifelse(eval(cosrelease < 8), 1, `dnl
@@ -41,7 +43,6 @@ ifelse(eval(cosrelease < 8), 1, `dnl
 ',`dnl
         python3-gobject-base \
 ')dnl
-        python36-devel \
         python3-rpm-macros \
         redhat-rpm-config \
         rpm-build \