Increase boot-pool size for TrueNAS Scale running under Proxmox

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I installed TrueNAS Scale under Proxmox on a 8GB disk VM. Today, when I attempted to upgrade to the latest 23.10.1 version of TrueNAS Scale, I received an error message from the installer stating that I was out of space. The installer needs 4.6GB and I have 3.1GB. I gleefully added 3GB to the Proxmox VM thinking it'll work like magic, but am unsure where that 3GB went as the installer error persists.

Two questions:

1. How do I add/allocate the additional 3GB that I added to go to the boot-pool?
2. Any way to reduce the size of the unused "udev" or "tmpfs" and "give" it to the boot-pool?

Newbie questions, still learning. Any pointers are very much appreciated.
Running df -h results in the following:

Code:

Filesystem                                                  Size  Used Avail Use% Mounted on
udev                                                        5.7G     0  5.7G   0% /dev
tmpfs                                                       1.2G  5.9M  1.2G   1% /run
boot-pool/ROOT/23.10.0.1                                    5.5G  2.5G  3.0G  45% /
tmpfs                                                       5.9G  112K  5.9G   1% /dev/shm
tmpfs                                                       100M     0  100M   0% /run/lock
tmpfs                                                       5.9G     0  5.9G   0% /tmp
boot-pool/grub                                              3.1G  8.3M  3.0G   1% /boot/grub
boot-pool/.system                                           4.2G  1.3G  3.0G  29% /var/db/system
boot-pool/.system/cores                                     1.0G  128K  1.0G   1% /var/db/system/cores
boot-pool/.system/samba4                                    3.0G  384K  3.0G   1% /var/db/system/samba4
boot-pool/.system/rrd-ae32c386e13840b2bf9c0083275e7941      3.0G  128K  3.0G   1% /var/db/system/rrd-ae32c386e13840b2bf9c0083275e7941
boot-pool/.system/configs-ae32c386e13840b2bf9c0083275e7941  3.0G  1.5M  3.0G   1% /var/db/system/configs-ae32c386e13840b2bf9c0083275e7941
boot-pool/.system/webui                                     3.0G  128K  3.0G   1% /var/db/system/webui
boot-pool/.system/services                                  3.0G  128K  3.0G   1% /var/db/system/services
boot-pool/.system/glusterd                                  3.0G  128K  3.0G   1% /var/db/system/glusterd
boot-pool/.system/ctdb_shared_vol                           3.0G  128K  3.0G   1% /var/db/system/ctdb_shared_vol
boot-pool/.system/netdata-ae32c386e13840b2bf9c0083275e7941  3.2G  115M  3.0G   4% /var/db/system/netdata-ae32c386e13840b2bf9c0083275e7941