Bump fortio.org/fortio from 1.66.3 to 1.66.4

Bumps [fortio.org/fortio](https://github.com/fortio/fortio) from 1.66.3 to 1.66.4.
- [Release notes](https://github.com/fortio/fortio/releases)
- [Commits](fortio/fortio@v1.66.3...v1.66.4)

---
updated-dependencies:
- dependency-name: fortio.org/fortio
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

go.mod

@@ -4,7 +4,7 @@ go 1.22.4
 
 require (
 	fortio.org/assert v1.2.1
-	fortio.org/fortio v1.66.3
+	fortio.org/fortio v1.66.4
 	fortio.org/log v1.16.0
 	fortio.org/scli v1.15.2
 	github.com/prometheus/client_golang v1.20.3
@@ -14,6 +14,7 @@ require (
 require (
 	fortio.org/cli v1.9.0 // indirect
 	fortio.org/dflag v1.7.2 // indirect
+	fortio.org/safecast v0.1.1 // indirect
 	fortio.org/sets v1.2.0 // indirect
 	fortio.org/struct2env v0.4.1 // indirect
 	fortio.org/version v1.0.4 // indirect

go.sum

@@ -4,10 +4,12 @@ fortio.org/cli v1.9.0 h1:cPgNHvrjxznmbmwuXSwPqQLKZ+RMW8i0iAOESLjt1aI=
 fortio.org/cli v1.9.0/go.mod h1:pk/JBE8LcXtNuo5Yj2bLsVbwPaHo8NWdbstSN0cpbFk=
 fortio.org/dflag v1.7.2 h1:lUhXFvDlw4CJj/q7hPv/TC+n/wVoQylzQO6bUg5GQa0=
 fortio.org/dflag v1.7.2/go.mod h1:6yO/NIgrWfQH195WbHJ3Y45SCx11ffivQjfx2C/FS1U=
-fortio.org/fortio v1.66.3 h1:N/Ic9W2tVoJ5LAcr8ZjcF3mNb2ftCw77ZtKF02jwf8Q=
-fortio.org/fortio v1.66.3/go.mod h1:+W7ooyLn/Fp3h0UF9JclFEJN50EOvelO6c+VhCYGwnM=
+fortio.org/fortio v1.66.4 h1:u7TNsHaYISTR+InM1oAL3WC/iRTLsqq7FNc6aQNgMrw=
+fortio.org/fortio v1.66.4/go.mod h1:gpgXwNan/lXNuql7DY6qbEtrUa40iN6OMOAxmgRWU7w=
 fortio.org/log v1.16.0 h1:GhU8/9NkYZmEIzvTN/DTMedDAStLJraWUUVUA2EbNDc=
 fortio.org/log v1.16.0/go.mod h1:t58Spg9njjymvRioh5F6qKGSupEsnMjXLGWIS1i3khE=
+fortio.org/safecast v0.1.1 h1:lKSckzBVCbeJXTNUiAvBdplYUafEHM9BahrP46WgPEQ=
+fortio.org/safecast v0.1.1/go.mod h1:xZmcPk3vi4kuUFf+tq4SvnlVdwViqf6ZSZl91Jr9Jdg=
 fortio.org/scli v1.15.2 h1:vWXt4QOViXNWy4Gdm7d2FDfptzWD00QiWzYAM/IUF7c=
 fortio.org/scli v1.15.2/go.mod h1:XvY2JglgCeeZOIc5CrfBTtcsxkVV8xmGL5ykAcBjEHI=
 fortio.org/sets v1.2.0 h1:FBfC7R2xrOJtkcioUbY6WqEzdujuBoZRbSdp1fYF4Kk=