spec: set the default release to 1

The release number in the RPMland canonically starts at 1, not at 0. I think
it technically doesn't cause any harm but let's stick to what all other packages
do.

koji-osbuild.spec

@@ -6,7 +6,7 @@
 
 Name:           koji-osbuild
 Version:        7
-Release:        0%{?dist}
+Release:        1%{?dist}
 Summary:        Koji integration for osbuild composer
 
 %forgemeta

test/container/builder/run-kojid.sh

@@ -3,7 +3,7 @@ set -ux
 
 if ls /share/rpms/*.rpm 1> /dev/null 2>&1; then
    echo "Using RPMs"
-   rpm -i /share/rpms/koji-osbuild-?-0.*.rpm \
+   rpm -i /share/rpms/koji-osbuild-?-1.*.rpm \
           /share/rpms/koji-osbuild-builder-*.rpm
 else
   echo "Using local plugin"

test/container/hub/run-hub.sh

@@ -3,7 +3,7 @@ set -eux
 
 if ls /share/rpms/*.rpm 1> /dev/null 2>&1; then
    echo "Using RPMs"
-   rpm -i /share/rpms/koji-osbuild-?-0.*.rpm \
+   rpm -i /share/rpms/koji-osbuild-?-1.*.rpm \
           /share/rpms/koji-osbuild-hub-*.rpm
 else
   echo "Using local plugin"