chore(deps): update module tailscale.com to v1.94.0 (#171)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

go.mod

@@ -2,4 +2,4 @@ module github.com/DoodleScheduling/derp-server
 
 go 1.25.5
 
-require tailscale.com v1.92.5
+require tailscale.com v1.94.0

go.sum

@@ -6,5 +6,5 @@ golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b h1:M2rDM6z3Fhozi9O7NWsxAkg/y
 golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b/go.mod h1:3//PLf8L/X+8b4vuAfHzxeRUl04Adcb341+IGKfnqS8=
 golang.org/x/mod v0.30.0 h1:fDEXFVZ/fmCKProc/yAXXUijritrDzahmwwefnjoPFk=
 golang.org/x/mod v0.30.0/go.mod h1:lAsf5O2EvJeSFMiBxXDki7sCgAxEUcZHXoXMKT4GJKc=
-tailscale.com v1.92.5 h1:h88HqtGk8jd9umF7l6m/8+QK69dY9IVMIlkNK9XYpvQ=
-tailscale.com v1.92.5/go.mod h1:jzTfKDd6XNNSNoX+Q9INIMpMU5rfZ9g8ojcAoMKi5w0=
+tailscale.com v1.94.0 h1:5oW3SF35aU9ekHDhP2J4CHewnA2NxE7SRilDB2pVjaA=
+tailscale.com v1.94.0/go.mod h1:gLnVrEOP32GWvroaAHHGhjSGMPJ1i4DvqNwEg+Yuov4=