To help debug, this is the result of cat /var/log/apt/history.log from when I began noticing the problem til today:

Start-Date: 2023-08-14  13:58:38
Commandline: apt upgrade -y
Requested-By: steve (1000)
Upgrade: libldap-common:amd64 (2.5.15+dfsg-0ubuntu0.22.04.1, 2.5.16+dfsg-0ubuntu0.22.04.1), libldap-2.5-0:amd64 (2.5.15+dfsg-0ubuntu0.22.04.1, 2.5.16+dfsg-0ubuntu0.22.04.1), code:amd64 (1.81.0-1690980880, 1.81.1-1691620686), intel-microcode:amd64 (3.20230214.0ubuntu0.22.04.1, 3.20230808.0ubuntu0.22.04.1), linux-libc-dev:amd64 (5.15.0-78.85, 5.15.0-79.86)
End-Date: 2023-08-14  13:59:23

Start-Date: 2023-08-14  16:07:36
Commandline: apt upgrade -y
Requested-By: steve (1000)
Upgrade: insomnia:amd64 (2023.3.0, 2023.5.0)
End-Date: 2023-08-14  16:07:53

Start-Date: 2023-08-15  18:28:19
Commandline: aptdaemon role='role-commit-packages' sender=':1.122'
Upgrade: redis-server:amd64 (6:7.0.12-1rl1~jammy1, 6:7.2.0-1rl1~jammy1), insomnia:amd64 (2023.5.0, 2023.5.2), mysql-server-8.0:amd64 (8.0.33-0ubuntu0.22.04.4, 8.0.34-0ubuntu0.22.04.1), mysql-client-8.0:amd64 (8.0.33-0ubuntu0.22.04.4, 8.0.34-0ubuntu0.22.04.1), libtiff5:amd64 (4.3.0-6ubuntu0.4, 4.3.0-6ubuntu0.5), gir1.2-javascriptcoregtk-4.0:amd64 (2.40.4-0ubuntu0.22.04.1, 2.40.5-0ubuntu0.22.04.1), gir1.2-webkit2-4.0:amd64 (2.40.4-0ubuntu0.22.04.1, 2.40.5-0ubuntu0.22.04.1), redis-tools:amd64 (6:7.0.12-1rl1~jammy1, 6:7.2.0-1rl1~jammy1), libjavascriptcoregtk-4.0-18:amd64 (2.40.4-0ubuntu0.22.04.1, 2.40.5-0ubuntu0.22.04.1), mysql-server:amd64 (8.0.33-0ubuntu0.22.04.4, 8.0.34-0ubuntu0.22.04.1), mysql-server-core-8.0:amd64 (8.0.33-0ubuntu0.22.04.4, 8.0.34-0ubuntu0.22.04.1), libwebkit2gtk-4.0-37:amd64 (2.40.4-0ubuntu0.22.04.1, 2.40.5-0ubuntu0.22.04.1), mysql-client-core-8.0:amd64 (8.0.33-0ubuntu0.22.04.4, 8.0.34-0ubuntu0.22.04.1)
End-Date: 2023-08-15  18:29:17

Start-Date: 2023-08-16  11:44:54
Commandline: apt upgrade -y
Requested-By: steve (1000)
Upgrade: insomnia:amd64 (2023.5.2, 2023.5.3)
End-Date: 2023-08-16  11:45:11

Start-Date: 2023-08-17  17:06:30
Commandline: apt-get install git
Requested-By: steve (1000)
Upgrade: git:amd64 (1:2.34.1-1ubuntu1.9, 1:2.34.1-1ubuntu1.10)
End-Date: 2023-08-17  17:06:31

Start-Date: 2023-08-17  17:53:56
Commandline: apt remove intel-microcode
Requested-By: steve (1000)
Remove: linux-image-generic-hwe-22.04:amd64 (6.2.0.26.26~22.04.7), linux-generic-hwe-22.04:amd64 (6.2.0.26.26~22.04.7), intel-microcode:amd64 (3.20230808.0ubuntu0.22.04.1)
End-Date: 2023-08-17  17:54:09

Start-Date: 2023-08-17  17:54:14
Commandline: apt install intel-microcode=3.20210608.2ubuntu1
Requested-By: steve (1000)
Install: intel-microcode:amd64 (3.20210608.2ubuntu1)
End-Date: 2023-08-17  17:54:27

Start-Date: 2023-08-17  17:58:10
Commandline: apt upgrade -y
Requested-By: steve (1000)
Upgrade: ghostscript-x:amd64 (9.55.0~dfsg1-0ubuntu5.3, 9.55.0~dfsg1-0ubuntu5.4), libwbclient0:amd64 (2:4.15.13+dfsg-0ubuntu1.2, 2:4.15.13+dfsg-0ubuntu1.3), libgs9-common:amd64 (9.55.0~dfsg1-0ubuntu5.3, 9.55.0~dfsg1-0ubuntu5.4), libsmbclient:amd64 (2:4.15.13+dfsg-0ubuntu1.2, 2:4.15.13+dfsg-0ubuntu1.3), ghostscript:amd64 (9.55.0~dfsg1-0ubuntu5.3, 9.55.0~dfsg1-0ubuntu5.4), samba-libs:amd64 (2:4.15.13+dfsg-0ubuntu1.2, 2:4.15.13+dfsg-0ubuntu1.3), libgs9:amd64 (9.55.0~dfsg1-0ubuntu5.3, 9.55.0~dfsg1-0ubuntu5.4), intel-microcode:amd64 (3.20210608.2ubuntu1, 3.20230808.0ubuntu0.22.04.1)
End-Date: 2023-08-17  17:58:35

Start-Date: 2023-08-17  17:58:40
Commandline: apt autoremove -y
Requested-By: steve (1000)
Remove: linux-headers-generic-hwe-22.04:amd64 (6.2.0.26.26~22.04.7), thermald:amd64 (2.4.9-1ubuntu0.3), amd64-microcode:amd64 (3.20191218.1ubuntu2.1)
End-Date: 2023-08-17  17:58:59

If this is the wrong place for this sort of conversation/debugging please feel free to close this issue/let me know and I will take this elsewhere. First time doing this sort of thing!