[BUG] Function "reviews_all" returns diferent amount of reviews at each script execution

[zmariopsaraujo]

Library version
1.2.6

Describe the bug
Every time that I ran my script returns a diferent numbers of reviews

Code
import pandas as pd

from google_play_scraper import Sort, reviews_all

result = reviews_all(
'com.araujo.araujoapp',
sleep_milliseconds=0,
lang='pt-br',
country='br',
sort=Sort.MOST_RELEVANT
)

df = pd.DataFrame(result)

size = df.shape
print(size[0])

Expected behavior
Size of DataFrame is equal of numbers of reviews of the app at play store and, if I run a code twice without have any new review, the amoud of reviews at each execution are equal.

[lucasbral]

Same problem here, scanning time has dropped considerably and now the reviews output have different values ​​for each search

[adilosa]

See #209