chore: Update quic-go to v0.41.0, bump Go minimum to 1.21 (#6043)

Co-authored-by: Francis Lavoie <lavofr@gmail.com>
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>

.github/workflows/ci.yml

@@ -23,18 +23,18 @@ jobs:
           - macos-latest
           - windows-latest
         go: 
-          - '1.20'
           - '1.21'
+          - '1.22'
 
         include:
         # Set the minimum Go patch version for the given Go minor
         # Usable via ${{ matrix.GO_SEMVER }}
-        - go: '1.20'
-          GO_SEMVER: '~1.20.6'
-
         - go: '1.21'
           GO_SEMVER: '~1.21.0'
 
+        - go: '1.22'
+          GO_SEMVER: '~1.22.0-rc.2'
+
         # Set some variables per OS, usable via ${{ matrix.VAR }}
         # CADDY_BIN_PATH: the path to the compiled Caddy binary, for artifact publishing
         # SUCCESS: the typical value for $? per OS (Windows/pwsh returns 'True')