chore(jobsdb): use a different advisory lock for different table prefixes

[atzoum]

Description

Different table prefixes shouldn't use the same advisory lock.

Security

• The code changed/added as part of this pull request won't create any security issues with how the software is being used.

[codecov]

Codecov Report

Base: 43.97% // Head: 43.97% // Decreases project coverage by -0.00% ⚠️

Coverage data is based on head (51cd742) compared to base (eb705df).
Patch coverage: 87.50% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2575      +/-   ##
==========================================
- Coverage   43.97%   43.97%   -0.01%     
==========================================
  Files         187      187              
  Lines       39076    39082       +6     
==========================================
+ Hits        17185    17187       +2     
- Misses      20810    20813       +3     
- Partials     1081     1082       +1     

Impacted Files	Coverage Δ
utils/misc/dbutils.go	0.00% <ø> (ø)
jobsdb/jobsdb.go	68.12% <87.50%> (+0.06%)	⬆️
utils/httputil/server.go	80.76% <0.00%> (-11.54%)	⬇️
warehouse/schema.go	47.82% <0.00%> (-1.16%)	⬇️
config/backend-config/namespace_config.go	73.95% <0.00%> (+3.12%)	⬆️

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