外部へのHTTPリクエストに独自のUser-Agentを付与する

[shibafu528]

正しいクローラーであるようにしたと言いたいですが、実際にはTwitter対策です。

[codecov]

Codecov Report

Merging #367 into develop will increase coverage by 0.16%.
The diff coverage is 100.00%.

@@              Coverage Diff              @@
##             develop     #367      +/-   ##
=============================================
+ Coverage      38.72%   38.88%   +0.16%     
  Complexity       394      394              
=============================================
  Files             73       73              
  Lines           1521     1525       +4     
=============================================
+ Hits             589      593       +4     
  Misses           932      932              

Impacted Files	Coverage Δ	Complexity Δ
app/Providers/AppServiceProvider.php	76.92% <100.00%> (+10.25%)	2.00 <0.00> (ø)

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[shibafu528]

CIが通らなかったので暫定的な対応をやった。