No need to rescue / reboot or anything.
yum install cloud-utils-growpart
growpart /dev/sda 1
resize2fs /dev/sda1
resize2fs 1.46.5 (30-Dec-2021)
Filesystem at /dev/sda1 is mounted on /; on-line resizing required
old_desc_blocks = 16, new_desc_blocks = 28
The filesystem on /dev/sda1 is now 58719995 (4k) blocks long.