core: Scrape imports scan_interval timedelta which leads to JSON serialize errors

The problem

2022.7 beta0 throws errors on migrated scrape sensors. Funny enough, the sensor do seem to get setup correctly.

What version of Home Assistant Core has the issue?

core-2022.7.0b0

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant Container

Integration causing the issue

Scrape

Link to integration documentation on our website

https://www.home-assistant.io/integrations/scrape/

Diagnostics information

No response

Example YAML snippet

# Yaml config that was imported:

- platform: scrape
  resource: !secret scrape_url_u
  name: "Diesel"
  select: ".field--name-field-station-prices .taxonomy-term-Diesel .field--name-field-prices-price-pump"
  value_template: "{{ value | replace('€', '') | replace('EUR/L', '') | float | round(3) }}"
  unit_of_measurement: €
  scan_interval: 3600

- platform: scrape
  resource: !secret scrape_url_u
  name: "Benzine"
  select: ".field--name-field-station-prices .taxonomy-term-Euro95 .field--name-field-prices-price-pump"
  value_template: "{{ value | replace('€', '') | replace('EUR/L', '') | float | round(3) }}"
  unit_of_measurement: €
  scan_interval: 3600

Anything in the logs that might be useful for us?

2022-06-30 13:45:01 ERROR (SyncWorker_0) [homeassistant.util.json] Failed to serialize to JSON: /config/.storage/core.config_entries. Bad data at $.data.entries[33].options.scan_interval=1:00:00(<class 'datetime.timedelta'>, $.data.entries[34].options.scan_interval=1:00:00(<class 'datetime.timedelta'>
2022-06-30 13:45:01 ERROR (MainThread) [homeassistant.helpers.storage] Error writing config for core.config_entries: Failed to serialize to JSON: /config/.storage/core.config_entries. Bad data at $.data.entries[33].options.scan_interval=1:00:00(<class 'datetime.timedelta'>, $.data.entries[34].options.scan_interval=1:00:00(<class 'datetime.timedelta'>
2022-06-30 13:45:01 WARNING (MainThread) [homeassistant.bootstrap] Waiting on integrations to complete setup: sensor.scrape, sensor.scrape_2
2022-06-30 13:48:10 ERROR (SyncWorker_3) [homeassistant.util.json] Failed to serialize to JSON: /config/.storage/core.config_entries. Bad data at $.data.entries[32].options.scan_interval=1:00:00(<class 'datetime.timedelta'>, $.data.entries[33].options.scan_interval=1:00:00(<class 'datetime.timedelta'>
2022-06-30 13:48:10 ERROR (MainThread) [homeassistant.helpers.storage] Error writing config for core.config_entries: Failed to serialize to JSON: /config/.storage/core.config_entries. Bad data at $.data.entries[32].options.scan_interval=1:00:00(<class 'datetime.timedelta'>, $.data.entries[33].options.scan_interval=1:00:00(<class 'datetime.timedelta'>