bump @expo/config-plugins from ~7.2.5 to ~7.8.0

[cavasinf]

Bump @expo/config-plugins to be compatible with expo 50.

npx expo-doctor@latest

✖ Check that native modules use compatible support package versions for installed Expo SDK
Detailed check results:
Expected package @expo/config-plugins@~7.8.0
Found invalid:
@expo/[email protected]
Advice: Upgrade dependencies that are using the invalid package versions0.

yarn why @expo/config-plugins

=> Found "@expo/[email protected]"
info Has been hoisted to "@expo/config-plugins"
info Reasons this module exists

• Hoisted from "expo#@expo#config-plugins"
• Hoisted from "expo-updates#@expo#config-plugins"
• Hoisted from "expo#@expo#cli#@expo#config-plugins"
• Hoisted from "expo-splash-screen#@expo#prebuild-config#@expo#config-plugins"
• Hoisted from "expo#@expo#config#@expo#config-plugins"

info Disk size without dependencies: "2.07MB"
info Disk size with unique dependencies: "3.88MB"
info Disk size with transitive dependencies: "8.4MB"
info Number of shared dependencies: 59
=> Found "react-native-nfc-manager#@expo/[email protected]"
info This module exists because "react-native-nfc-manager" depends on it.
info Disk size without dependencies: "1.67MB"
info Disk size with unique dependencies: "3.2MB"
info Disk size with transitive dependencies: "7.52MB"
info Number of shared dependencies: 50

[RonakDoshiTMI]

Closes #695

[whitedogg13]

@cavasinf thanks for the contribution! this one has been included in v3.14.14