chore(deps): update all non-major dependencies

This MR contains the following updates:

Package	Type	Update	Change
@vue/cli-plugin-babel	devDependencies	minor	4.2.3 -> 4.3.1
@vue/cli-plugin-eslint	devDependencies	minor	4.2.3 -> 4.3.1
@vue/cli-service (source)	devDependencies	minor	4.2.3 -> 4.3.1
Django (source, changelog)		patch	==3.0.3 -> ==3.0.6
Pillow (source)		minor	==7.0.0 -> ==7.1.2
bootstrap-select (source)		patch	1.13.12 -> 1.13.17
core-js	dependencies	patch	3.6.4 -> 3.6.5
coverage		minor	==5.0.3 -> ==5.1
eslint-plugin-vue (source)	devDependencies	patch	6.2.1 -> 6.2.2
node	stage	patch	12.16.1-alpine -> 12.16.3-alpine
psycopg2-binary (changelog)		patch	==2.8.4 -> ==2.8.5
requests_mock		minor	==1.7.0 -> ==1.8.0
sphinx		patch	==2.4.3 -> ==2.4.4
sqlalchemy		patch	==1.3.13 -> ==1.3.16
vuex	dependencies	minor	3.1.2 -> 3.3.0

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