Is it safe for me to eat a salmon/tuna packet that's been in the car all summer?
The standard processing for this type of "flexible can" or "retort pouch" packaging is a certain amount of time at 250F or so to completely sterilize the contents. There's nothing alive in there to cause spoilage, or the process would not work at all.

As such, I find the comment stream remarkably uninformed - will 130F damage the package? If so, it would never have made it out of the factory...and the widespread precursor to the civilian application of this package (as mentioned in a more informed comment) is the MRE, and you can bet those go through some roasty-toasty temperatures in desert war zones. 

If the packages are sealed, they are still sterile. Nothing that happened in your car is anywhere near the temperatures that were used to sterilize the contents in the first place.