Explicitily define the global envs to be used instead of using `all: true`

[pablomendezroyo]

The manifest feature globalEnvs: {all: true} will be probably deprecated (dappnode/DAppNodeSDK#270), instead define the global envs that this package requires.

Take as an example https://github.com/dappnode/DAppNodePackage-teku-prater/blob/57ff8e7bd926e7333b700ab0c0b331c609c7df6e/dappnode_package.json#L41

[pablomendezroyo]

@tropicar @3alpha Do you know where are used the global envs in this package? I could not found them

Also, please implement the new globalEnv definition approach

[tropicar]

Global envs are not used in this package as far as i know and testing the package without this conf there is not a problem, so I think we should remove it.