Update copr makefile

Author: aiudirog

.copr/Makefile

@@ -1,4 +1,4 @@
 srpm:
-	dnf install -y python2
-	sed "s/name='requests-gssapi'/name='python-requests-gssapi'/" setup.py > .copr/setup.py
-	python .copr/setup.py bdist_rpm --source-only --dist-dir "$(outdir)" --build-requires=python-setuptools
+	dnf install -y python3
+	sed "s/name='httpx-gssapi'/name='python-httpx-gssapi'/" setup.py > .copr/setup.py
+	python3 .copr/setup.py bdist_rpm --source-only --dist-dir "$(outdir)" --build-requires=python-setuptools