deps: update vendor dependencies for S3-compatible storage

Updates AWS SDK and removes Blazer B2 dependency in favor of unified
S3-compatible approach. Includes configuration examples and documentation.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

vendor/github.com/aws/aws-sdk-go/internal/ini/skipper.go

@@ -0,0 +1,45 @@
+package ini
+
+// skipper is used to skip certain blocks of an ini file.
+// Currently skipper is used to skip nested blocks of ini
+// files. See example below
+//
+//	[ foo ]
+//	nested = ; this section will be skipped
+//		a=b
+//		c=d
+//	bar=baz ; this will be included
+type skipper struct {
+	shouldSkip bool
+	TokenSet   bool
+	prevTok    Token
+}
+
+func newSkipper() skipper {
+	return skipper{
+		prevTok: emptyToken,
+	}
+}
+
+func (s *skipper) ShouldSkip(tok Token) bool {
+	// should skip state will be modified only if previous token was new line (NL);
+	// and the current token is not WhiteSpace (WS).
+	if s.shouldSkip &&
+		s.prevTok.Type() == TokenNL &&
+		tok.Type() != TokenWS {
+		s.Continue()
+		return false
+	}
+	s.prevTok = tok
+	return s.shouldSkip
+}
+
+func (s *skipper) Skip() {
+	s.shouldSkip = true
+}
+
+func (s *skipper) Continue() {
+	s.shouldSkip = false
+	// empty token is assigned as we return to default state, when should skip is false
+	s.prevTok = emptyToken
+}