all: Bump to v1.21.0 (#3428)

Thank you @alexandear, @chenhengqi, @cuishuang, @alexsaezm, @suzmue,
@spacewander, @ZekeLu, @fche, @andreimatei, @nozzy123nozzy

Author: aarzilli

Diff for: CHANGELOG.md

@@ -3,6 +3,39 @@
 All notable changes to this project will be documented in this file.
 This project adheres to Semantic Versioning.
 
+## [1.21.0] 2023-06-23
+
+### Added
+
+- Go 1.21 support (#3370, #3401, @aarzilli)
+- Basic debug functionality for stripped executables (#3408, #3421, @derekparker)
+- Core dumping on FreeBSD (#3305, @aarzilli)
+- Ability to automatically attach to child processes when they are spawned (linux-only) (#3286, #3346, @aarzilli)
+- Starlark scripts can now use the time module (#3375, @andreimatei)
+- Online help for starlark interpreter (#3388, @aarzilli)
+- `dlv trace` has a new option, `--timestamp`, that prints timestamps before every trace event (#3358, @spacewander)
+
+### Fixed
+
+- Stepping could hide normal breakpoint hits occurring simultaneously, in rare circumstances (#3287, @aarzilli)
+- Internal error when defer locations can not be resolved (#3329, @aarzilli)
+- Channels of certain types could be displayed incorrectly (#3362, @aarzilli)
+- Formatted time wouldn't always be displayed when using DAP (#3349, @suzmue)
+- Function call injection when parameters are in registers (#3365, @ZekeLu)
+- Panic in Starlark interface when using partially loaded variables (#3386, @andreimatei)
+- Use debug info directories configuration in `dlv trace` (#3405, @nozzy123nozzy)
+- Updated DAP version (#3414, @suzmue)
+
+### Changed
+
+- Improved eBPF tracepoints (#3325, #3353, #3417, @chenhengqi, @derekparker)
+- The name of the default output binary is now randomizes, which fixes some weird behavior when multiple instances of Delve are run simultaneously in the same directory (#3366, @aarzilli)
+- Stderr of debuginfod-find is now suppressed (#3381, @fche)
+- Better documentation for substitute-path (#3335, @aarzilli)
+- `quit -c` will ask for confirmation when breakpoints still exist (#3398, @aarzilli)
+- Miscellaneous improvements to documentation and tests (#3326, #3327, #3340, #3341, #3357, #3378, #3376, #3399, #3374, #3426, @alexandear, @cuishuang, @alexsaezm, @andreimatei)
+
+
 ## [1.20.2] 2023-04-05
 
 ### Added

Diff for: pkg/goversion/compat.go

@@ -10,7 +10,7 @@ var (
 	MinSupportedVersionOfGoMajor = 1
 	MinSupportedVersionOfGoMinor = 18
 	MaxSupportedVersionOfGoMajor = 1
-	MaxSupportedVersionOfGoMinor = 20
+	MaxSupportedVersionOfGoMinor = 21
 	goTooOldErr                  = fmt.Sprintf("Go version %%s is too old for this version of Delve (minimum supported version %d.%d, suppress this error with --check-go-version=false)", MinSupportedVersionOfGoMajor, MinSupportedVersionOfGoMinor)
 	goTooOldWarn                 = fmt.Sprintf("WARNING: undefined behavior - Go version %%s is too old for this version of Delve (minimum supported version %d.%d)", MinSupportedVersionOfGoMajor, MinSupportedVersionOfGoMinor)
 	dlvTooOldErr                 = fmt.Sprintf("Version of Delve is too old for Go version %%s (maximum supported version %d.%d, suppress this error with --check-go-version=false)", MaxSupportedVersionOfGoMajor, MaxSupportedVersionOfGoMinor)

Diff for: pkg/version/version.go

@@ -17,7 +17,7 @@ type Version struct {
 var (
 	// DelveVersion is the current version of Delve.
 	DelveVersion = Version{
-		Major: "1", Minor: "20", Patch: "2", Metadata: "",
+		Major: "1", Minor: "21", Patch: "0", Metadata: "",
 		Build: "$Id$",
 	}
 )