FIXUP: .packit.yaml: fix issues when building SRPM

Packit needs golang to be installed when we build SRPM, because we need
to vendor code to generate the archive.

Moreover, we need to vendor code to be able to modify SPEC port upstream
clone to include bundled code.

Signed-off-by: Tomáš Hozza <thozza@redhat.com>

.packit.yaml

@@ -12,10 +12,11 @@ upstream_tag_template: v{version}
 
 srpm_build_deps:
   - make
+  - golang
 
 actions:
   get-current-version: bash -c "git describe --tags --abbrev=0 | sed 's|v||'"
-  post-upstream-clone: "./tools/rpm_spec_add_provides_bundle.sh"
+  post-upstream-clone: bash -c "go mod vendor && ./tools/rpm_spec_add_provides_bundle.sh"
   create-archive: bash -c "make release_artifacts"
 
 # Handle only releases without a "dot" (e.g. v88.2), since "dot" releases should never be released to Fedora