A TO-220 7805 will survive fine, especially given a small heat sink.

Without a heatsink, the thermal resistance junction to ambient is given as 23.9°C/W so you'll have 30V*5mA + 25V*50mA = 1.4W dissipation, leading to ~35°C rise, so at 50°C ambient your junction will be at 85°C, still relatively safe, if my assumption of maximum ambient and the datasheet assumptions of TO-220 mounting are valid. However, the 30V nominal input is really a bit high for comfort compared to the absolute maximum 35V of the 7805. Adding a 5.6V zener and a polarity protection diode helps with that:

^{simulate this circuit – Schematic created using CircuitLab}

It also reduces the power dissipation (of the regulator) by 0.3W (which, of course, is just moved to the Zener diode).

You could also use a small switching regulator module such as the XP Power SRH05S05 which will survive 72V input transients and is roughly a 10mm x 11mm x 7.5mm cube. There are others from different manufacturers, that is just an example, but your 30V is a bit high for comfort compared to the

A TO-220 7805 will survive fine, especially given a small heat sink.

Without a heatsink, the thermal resistance junction to ambient is given as 23.9°C/W so you'll have 30V*5mA + 25V*50mA = 1.4W dissipation, leading to ~35°C rise, so at 50°C ambient your junction will be at 85°C, still relatively safe, if my assumption of maximum ambient and the datasheet assumptions of TO-220 mounting are valid. However, the 30V nominal input is really a bit high for comfort compared to the absolute maximum 35V of the 7805. Adding a 5.6V zener and a polarity protection diode helps with that:

^{simulate this circuit – Schematic created using CircuitLab}

It also reduces the power dissipation (of the regulator) by 0.3W (which, of course, is just moved to the Zener diode).

You could also use a small switching regulator module such as the XP Power SRH05S05 which will survive 72V input transients and is roughly a 10mm x 11mm x 7.5mm cube. There are others from different manufacturers, that is just an example, but your 30V is a bit high for comfort compared to many of them.