docs: update pages for v2 (#5505)

Author: ldez

.custom-gcl.reference.yml

@@ -1,6 +1,6 @@
 # The golangci-lint version used to build the custom binary.
-# Require.
-version: v1.56.2
+# Required.
+version: v2.0.0
 
 # The name of the custom binary.
 # Optional.

.golangci.next.reference.yml

@@ -1372,7 +1372,7 @@ linters:
         - G504 # Import blocklist: net/http/cgi
         - G505 # Import blocklist: crypto/sha1
         - G506 # Import blocklist: golang.org/x/crypto/md4
-        - G507 #Import blocklist: golang.org/x/crypto/ripemd160
+        - G507 # Import blocklist: golang.org/x/crypto/ripemd160
         - G601 # Implicit memory aliasing of items from a range statement
         - G602 # Slice access out of bounds
 
@@ -1417,7 +1417,7 @@ linters:
         - G504 # Import blocklist: net/http/cgi
         - G505 # Import blocklist: crypto/sha1
         - G506 # Import blocklist: golang.org/x/crypto/md4
-        - G507 #Import blocklist: golang.org/x/crypto/ripemd160
+        - G507 # Import blocklist: golang.org/x/crypto/ripemd160
         - G601 # Implicit memory aliasing of items from a range statement
         - G602 # Slice access out of bounds
 
@@ -3983,6 +3983,23 @@ formatters:
       # Default: true
       chain-split-dots: false
 
+  exclusions:
+    # Mode of the generated files analysis.
+    #
+    # - `strict`: sources are excluded by strictly following the Go generated file convention.
+    #    Source files that have lines matching only the following regular expression will be excluded: `^// Code generated .* DO NOT EDIT\.$`
+    #    This line must appear before the first non-comment, non-blank text in the file.
+    #    https://go.dev/s/generatedcode
+    # - `lax`: sources are excluded if they contain lines like `autogenerated file`, `code generated`, `do not edit`, etc.
+    # - `disable`: disable the generated files exclusion.
+    #
+    # Default: lax
+    generated: strict
+    # Which file paths to exclude.
+    # Default: []
+    paths:
+      - ".*\\.my\\.go$"
+      - lib/bad.go
 
 issues:
   # Maximum issues count per one linter.

.golangci.yml

@@ -166,6 +166,11 @@ linters:
         linters: [gosec]
         text: "G115: integer overflow conversion uint64 -> int"
 
+      # The files created during the tests don't need to be secured.
+      - path: scripts/website/expand_templates/linters_test.go
+        linters: [gosec]
+        text: "G306: Expect WriteFile permissions to be 0600 or less"
+
 formatters:
   enable:
     - gofmt