Bump golang.org/x/oauth2 from 0.18.0 to 0.19.0 (#140)

Bumps [golang.org/x/oauth2](https://github.com/golang/oauth2) from
0.18.0 to 0.19.0.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/golang/oauth2/commit/d0e617c58cf747cf27df9762003502f814dd524c"><code>d0e617c</code></a>
google: add Credentials.UniverseDomainProvider</li>
<li><a
href="https://github.com/golang/oauth2/commit/3c9c1f6d00e8761389cd2c50bc4179459d6320b5"><code>3c9c1f6</code></a>
oauth2/google: fix the logic of sts 0 value of expires_in</li>
<li><a
href="https://github.com/golang/oauth2/commit/5a05c654f92c675eb6bfe782f61b601b0efb77ea"><code>5a05c65</code></a>
oauth2/google: fix remove content-type header from idms get
requests</li>
<li><a
href="https://github.com/golang/oauth2/commit/3a6776ada799d857cee190d6f517c4afee7c3170"><code>3a6776a</code></a>
appengine: drop obsolete code for AppEngine envs &lt;=Go 1.11</li>
<li>See full diff in <a
href="https://github.com/golang/oauth2/compare/v0.18.0...v0.19.0">compare
view</a></li>
</ul>
</details>
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go.mod

@@ -29,7 +29,7 @@ require (
 	github.com/sigstore/sigstore v1.8.3
 	github.com/transparency-dev/merkle v0.0.2
 	go.uber.org/ratelimit v0.3.1
-	golang.org/x/oauth2 v0.18.0
+	golang.org/x/oauth2 v0.19.0
 )
 
 require (

go.sum

@@ -1099,8 +1099,8 @@ golang.org/x/oauth2 v0.0.0-20191202225959-858c2ad4c8b6/go.mod h1:gOpvHmFTYa4Iltr
 golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20210514164344-f6687ab2804c/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20220223155221-ee480838109b/go.mod h1:DAh4E804XQdzx2j+YRIaUnCqCV2RuMz24cGBJ5QYIrc=
-golang.org/x/oauth2 v0.18.0 h1:09qnuIAgzdx1XplqJvW6CQqMCtGZykZWcXzPMPUusvI=
-golang.org/x/oauth2 v0.18.0/go.mod h1:Wf7knwG0MPoWIMMBgFlEaSUDaKskp0dCfrlJRJXbBi8=
+golang.org/x/oauth2 v0.19.0 h1:9+E/EZBCbTLNrbN35fHv/a/d/mOBatymz1zbtQrXpIg=
+golang.org/x/oauth2 v0.19.0/go.mod h1:vYi7skDa1x015PmRRYZ7+s1cWyPgrPiSYRe4rnsexc8=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=