chore(deps): update postgres docker tag to v15

[renovate]

This PR contains the following updates:

Package	Update	Change
postgres	major	14 -> 15

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[duyetbot]

Coverage Report

Created: 2022-10-14 22:18

Click here for information about interpreting this report.

Filename	Function Coverage	Line Coverage	Region Coverage	Branch Coverage
lib.rs	100.00% (1/1)	100.00% (1/1)	100.00% (1/1)	- (0/0)
main.rs	69.23% (9/13)	28.89% (13/45)	64.71% (11/17)	- (0/0)
response.rs	55.00% (11/20)	50.72% (35/69)	46.67% (21/45)	- (0/0)
test_utils.rs	42.86% (3/7)	87.50% (56/64)	60.00% (6/10)	- (0/0)
v1/glossary.rs	91.43% (64/70)	95.12% (312/328)	79.17% (171/216)	- (0/0)
v1/glossary_history.rs	80.00% (4/5)	97.30% (36/37)	40.00% (6/15)	- (0/0)
v1/like.rs	85.00% (34/40)	87.94% (124/141)	73.28% (96/131)	- (0/0)
Totals	80.77% (126/156)	84.23% (577/685)	71.72% (312/435)	- (0/0)

Generated by llvm-cov -- llvm version 14.0.6-rust-1.64.0-stable

[codecov]

Codecov Report

Merging #75 (d4d73ac) into master (4afbe5b) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #75   +/-   ##
=======================================
  Coverage   73.98%   73.98%           
=======================================
  Files           7        7           
  Lines        1276     1276           
=======================================
  Hits          944      944           
  Misses        332      332           

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