chore: update Go to 1.26.1, fix goimports formatting, add tests

- Update go.mod from Go 1.26.0 to 1.26.1
- Update dependencies: golang.org/x/sync, golang.org/x/sys,
  charmbracelet/x/exp/charmtone, mattn/go-runewidth
- Fix goimports formatting in 10 files
- Add apk/normalize_test.go: tests for normalizeName and
  parseArchNormalize with all known arch suffixes
- Add rpm/parse_test.go: tests for parseList, parseInfo,
  parseArchSuffix, and normalizeName (all at 100% coverage)
- All tests pass with -race, staticcheck and go vet clean

apk/normalize.go

@@ -17,14 +17,14 @@ func normalizeName(name string) string {
 //   - package-aarch64
 func parseArchNormalize(name string) (string, string) {
 	knownArchs := map[string]bool{
-		"x86_64":   true,
-		"x86":      true,
-		"aarch64":  true,
-		"armhf":    true,
-		"armv7":    true,
-		"ppc64le":  true,
-		"s390x":    true,
-		"riscv64":  true,
+		"x86_64":      true,
+		"x86":         true,
+		"aarch64":     true,
+		"armhf":       true,
+		"armv7":       true,
+		"ppc64le":     true,
+		"s390x":       true,
+		"riscv64":     true,
 		"loongarch64": true,
 	}