convert uses of interface{} to any

Done via:
  find . -name "*.go" | xargs sed -i -E 's/interface\{\}/any/g'

PiperOrigin-RevId: 487033228

tools/checklinkname/check_linkname.go

@@ -208,7 +208,7 @@ func checkOneRemote(pass *analysis.Pass, sym, wantSig string) {
 	}
 }
 
-func run(pass *analysis.Pass) (interface{}, error) {
+func run(pass *analysis.Pass) (any, error) {
 	// First, check if any remote symbols are in this package.
 	p, ok := knownLinknames[pass.Pkg.Path()]
 	if ok {