chore: bump github.com/sigstore/sigstore from 1.8.2 to 1.8.3

Bumps [github.com/sigstore/sigstore](https://github.com/sigstore/sigstore) from 1.8.2 to 1.8.3.
- [Release notes](https://github.com/sigstore/sigstore/releases)
- [Commits](sigstore/sigstore@v1.8.2...v1.8.3)

---
updated-dependencies:
- dependency-name: github.com/sigstore/sigstore
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

go.mod

@@ -129,7 +129,7 @@ require (
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475 // indirect
 	github.com/sergi/go-diff v1.3.1 // indirect
-	github.com/sigstore/sigstore v1.8.2
+	github.com/sigstore/sigstore v1.8.3
 	github.com/xanzy/ssh-agent v0.3.3 // indirect
 	github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb // indirect
 	github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect

go.sum

@@ -273,8 +273,8 @@ github.com/sergi/go-diff v1.3.1 h1:xkr+Oxo4BOQKmkn/B9eMK0g5Kg/983T9DqqPHwYqD+8=
 github.com/sergi/go-diff v1.3.1/go.mod h1:aMJSSKb2lpPvRNec0+w3fl7LP9IOFzdc9Pa4NFbPK1I=
 github.com/sigstore/fulcio v1.4.4 h1:RjfymVe5t3a2CUBfLYo+7xEYuBusZa/XmFGxiYTsAqI=
 github.com/sigstore/fulcio v1.4.4/go.mod h1:yYtN6mvEFMSS/m7IM6+3rosUa30+0kgn4hIFbzZARZA=
-github.com/sigstore/sigstore v1.8.2 h1:0Ttjcn3V0fVQXlYq7+oHaaHkGFIt3ywm7SF4JTU/l8c=
-github.com/sigstore/sigstore v1.8.2/go.mod h1:CHVcSyknCcjI4K2ZhS1SI28r0tcQyBlwtALG536x1DY=
+github.com/sigstore/sigstore v1.8.3 h1:G7LVXqL+ekgYtYdksBks9B38dPoIsbscjQJX/MGWkA4=
+github.com/sigstore/sigstore v1.8.3/go.mod h1:mqbTEariiGA94cn6G3xnDiV6BD8eSLdL/eA7bvJ0fVs=
 github.com/sirupsen/logrus v1.7.0/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
 github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
 github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=