I am wondering when we can drop support for g++-8. All supported operating systems, except for CentOS Stream 8 offer a greater version:

* Ubuntu Focal: gcc 9 (https://packages.ubuntu.com/focal/gcc)
* Debian Bullseye: gcc 10 (https://packages.debian.org/bullseye/gcc)
* CentOS 8 Stream: gcc 8, with EOL of " May 31st, 2024 " (https://www.centos.org/centos-stream/)

The rationale for dropping it would be that there are currently occasional compile failures with perfectly valid C++-17 code, for example:

* `error: call to non-‘constexpr’ function ‘void __assert_fail(const char*, const char*, unsigned int, const char*)’ assert(false);` (https://godbolt.org/z/bxaMnfcsa)
#include <qt/addresstablemodel.h>
#include <qt/guiutil.h>
#include <qt/walletmodel.h>
#include <key_io.h>
#include <wallet/types.h>
#include <wallet/wallet.h>
#include <algorithm>
#include <QFont>
#include <QDebug>
const QString AddressTableModel::Send = "S";
const QString AddressTableModel::Receive = "R";
struct AddressTableEntry
{
    enum Type {
        Sending,
        Receiving,
        Hidden 
    };
    Type type;
    QString label;
    QString address;
    AddressTableEntry() = default;