back up sigstore to 1.8.9 for go 1.22.7 or older

Signed-off-by: Dave Dykstra <[email protected]>

go.mod

@@ -1,13 +1,15 @@
 module github.com/apptainer/sif/v2
 
-go 1.22.8
+go 1.22.5
+
+toolchain go1.22.7
 
 require (
 	github.com/ProtonMail/go-crypto v1.0.0
 	github.com/google/go-containerregistry v0.20.2
 	github.com/google/uuid v1.6.0
 	github.com/sebdah/goldie/v2 v2.5.5
-	github.com/sigstore/sigstore v1.8.10
+	github.com/sigstore/sigstore v1.8.9
 	github.com/spf13/cobra v1.8.1
 	github.com/spf13/pflag v1.0.5
 )

go.sum

@@ -61,8 +61,8 @@ github.com/secure-systems-lab/go-securesystemslib v0.8.0/go.mod h1:UH2VZVuJfCYR8
 github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
 github.com/sergi/go-diff v1.1.0 h1:we8PVUC3FE2uYfodKH/nBHMSetSfHDR6scGdBi+erh0=
 github.com/sergi/go-diff v1.1.0/go.mod h1:STckp+ISIX8hZLjrqAeVduY0gWCT9IjLuqbuNXdaHfM=
-github.com/sigstore/sigstore v1.8.10 h1:r4t+TYzJlG9JdFxMy+um9GZhZ2N1hBTyTex0AHEZxFs=
-github.com/sigstore/sigstore v1.8.10/go.mod h1:BekjqxS5ZtHNJC4u3Q3Stvfx2eyisbW/lUZzmPU2u4A=
+github.com/sigstore/sigstore v1.8.9 h1:NiUZIVWywgYuVTxXmRoTT4O4QAGiTEKup4N1wdxFadk=
+github.com/sigstore/sigstore v1.8.9/go.mod h1:d9ZAbNDs8JJfxJrYmulaTazU3Pwr8uLL9+mii4BNR3w=
 github.com/spf13/cobra v1.8.1 h1:e5/vxKd/rZsfSJMUX1agtjeTDf+qv1/JdBF8gg5k9ZM=
 github.com/spf13/cobra v1.8.1/go.mod h1:wHxEcudfqmLYa8iTfL+OuZPbBZkmvliBWKIezN3kD9Y=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=