[librsvg-oci-images/fix-build] fedora: try the official cargo-c package

[Sven Neumann <sneumann src gnome org>]

commit 135e6f412a89a0f6d3734131cb0b04eaa2ffc293
Author: Sven Neumann <sven svenfoo org>
Date:   Tue Feb 9 19:58:27 2021 +0100

    fedora: try the official cargo-c package

 fedora/latest.Dockerfile | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)
---
diff --git a/fedora/latest.Dockerfile b/fedora/latest.Dockerfile
index 6a59c42..9cd5a3f 100644
--- a/fedora/latest.Dockerfile
+++ b/fedora/latest.Dockerfile
@@ -1,13 +1,11 @@
 FROM registry.fedoraproject.org/fedora:32
 
 RUN dnf upgrade -y && \
-    dnf install -y gcc rust rust-std-static cargo make vala \
-    automake autoconf libtool gettext itstool \
+    dnf install -y gcc rust rust-std-static cargo cargo-c \
+    make vala automake autoconf libtool gettext itstool \
     gdk-pixbuf2-devel gobject-introspection-devel \
     gtk-doc git redhat-rpm-config gtk3-devel ccache \
-    libxml2-devel cairo-devel pango-devel \
-    gettext-devel && \
-    dnf install -y 
https://kojipkgs.fedoraproject.org/packages/rust-cargo-c/0.6.18/3.fc34/x86_64/cargo-c-0.6.18-3.fc34.x86_64.rpm
+    libxml2-devel cairo-devel pango-devel gettext-devel
 RUN dnf clean all
 
 # Enable sudo for wheel users