changelogs: Fix count variable type

The variable `count` in `print_changelogs` used to be `int32_t`, but was
changed to `int64_t`. Because of that, the build on i686 arch fails with:

```
error: conversion from 'int64_t' {aka 'long long int'} to
'__gnu_cxx::__normal_iterator<libdnf5::rpm::Changelog*,
std::vector<libdnf5::rpm::Changelog> >::difference_type' {aka 'int'} may
change value [-Werror=conversion]
```

dnf5-plugins/changelog_plugin/changelog.cpp

@@ -117,8 +117,8 @@ void ChangelogCommand::configure() {
 void ChangelogCommand::run() {
     auto & ctx = get_context();
 
-    std::pair<libdnf5::cli::output::ChangelogFilterType, std::variant<libdnf5::rpm::PackageQuery, int64_t>> filter = {
-        libdnf5::cli::output::ChangelogFilterType::NONE, 0};
+    std::pair<libdnf5::cli::output::ChangelogFilterType, std::variant<libdnf5::rpm::PackageQuery, int64_t, int32_t>>
+        filter = {libdnf5::cli::output::ChangelogFilterType::NONE, 0};
     libdnf5::rpm::PackageQuery full_package_query(ctx.base, libdnf5::sack::ExcludeFlags::APPLY_EXCLUDES, false);
 
     auto since = since_option->get_value();

include/libdnf5-cli/output/changelogs.hpp

@@ -33,7 +33,7 @@ enum class ChangelogFilterType { NONE, UPGRADES, COUNT, SINCE };
 
 void print_changelogs(
     libdnf5::rpm::PackageQuery & query,
-    std::pair<ChangelogFilterType, std::variant<libdnf5::rpm::PackageQuery, int64_t>> filter);
+    std::pair<ChangelogFilterType, std::variant<libdnf5::rpm::PackageQuery, int64_t, int32_t>> filter);
 
 }  // namespace libdnf5::cli::output
 

libdnf5-cli/output/changelogs.cpp

@@ -34,7 +34,7 @@ namespace libdnf5::cli::output {
 
 void print_changelogs(
     libdnf5::rpm::PackageQuery & query,
-    std::pair<ChangelogFilterType, std::variant<libdnf5::rpm::PackageQuery, int64_t>> filter) {
+    std::pair<ChangelogFilterType, std::variant<libdnf5::rpm::PackageQuery, int64_t, int32_t>> filter) {
     // by_srpm
     std::map<std::string, std::vector<libdnf5::rpm::Package>> by_srpm;
     for (auto pkg : query) {
@@ -88,7 +88,7 @@ void print_changelogs(
             }
             changelogs.erase(changelogs.begin() + static_cast<int>(idx), changelogs.end());
         } else if (filter.first == ChangelogFilterType::COUNT) {
-            int64_t count = std::get<int64_t>(filter.second);
+            int32_t count = std::get<int32_t>(filter.second);
             if (count > 0) {
                 if (static_cast<size_t>(count) < changelogs.size()) {
                     changelogs.erase(changelogs.begin() + count, changelogs.end());