go: upgrade 1.26.5 -> 1.26.6

From: Peter Marko <peter.marko@siemens.com>

Upgrade to latest 1.26.x release [1]:

$ git --no-pager log --oneline go1.26.5..go1.26.6
1ea5a71ad8 (tag: go1.26.6) [release-branch.go1.26] go1.26.6
115eb476aa [release-branch.go1.26] cmd/vendor: fix CVE-2026-56865 in x/mod
9f6980fd5c [release-branch.go1.26] cmd/vendor: fix CVE-2026-56864 in x/mod
6ec908dd24 [release-branch.go1.26] encoding/asn1: enforce maximum recursion depth
9918f26ab3 [release-branch.go1.26] encoding/xml: fix depth processing in (*Decoder).unmarshal
33ecb966ca [release-branch.go1.26] html/template: fix JavaScript regexp tracking
128893dbf9 [release-branch.go1.26] net/url: avoid quadratic complexity in resolvePath
13c194062c [release-branch.go1.26] cmd/compile: do not elide riscv64 sign extension of unsigned values
52e5e2f22a [release-branch.go1.26] cmd/compile: fix time traveling proofs in prove
db38ee7121 [release-branch.go1.26] cmd/compile: fix prove to generate Const64 for 64bits slicemasks
f5bf46f361 [release-branch.go1.26] cmd/compile: fix mips64le bigger than 32bits pointer offsets
f8d4fa6213 [release-branch.go1.26] runtime: fix frame pointer adjustment around injected calls
efc79671b1 [release-branch.go1.26] cmd/compile: do not home mul/div results in HI/LO
605fd48711 [release-branch.go1.26] crypto/tls: add fips140ems GODEBUG setting to disable EMS enforcement
100fb8f023 [release-branch.go1.26] cmd/link: quote PE .def library name
4d522f275f [release-branch.go1.26] cmd/compile: tighten mergelocals address use analysis
0e8a244fe5 [release-branch.go1.26] all: update x/net
019fcb0152 [release-branch.go1.26] cmd/compile: don't require Heapaddr for heap vars in dead code
b6432317a1 [release-branch.go1.26] crypto/tls: do not count handshake messages as state-advancing post-handshake
ae63e27897 [release-branch.go1.26] runtime: fix uninitialized 7th argument in mach_vm_region_trampoline
88bf57924f [release-branch.go1.26] runtime: don't emit write barrier for code pointers in itabInit
4238449188 [release-branch.go1.26] os: strip trailing slashes in RemoveAll on Plan 9
28f27d64cf [release-branch.go1.26] os: properly handle trailing / in Root.MkdirAll
cc312256f8 [release-branch.go1.26] runtime: be sure to scan small frame introduced by (*sigctxt).pushCall
07a0bbba1b [release-branch.go1.26] os: don't expect an error from Root.ReadFile from a directory on NetBSD
a42fec40ab [release-branch.go1.26] all: update x/net
5bbd22ff78 [release-branch.go1.26] net/http: apply header timeout to server's unencrypted HTTP/2 check

Fixes CVE-2026-56865, CVE-2026-56864, CVE-2026-56859, CVE-2026-56853,
      CVE-2026-56860, CVE-2026-46600, CVE-2026-56862, CVE-2026-56858,
      CVE-2026-39821 and CVE-2026-33818.

Release information: [2]

[1] https://github.com/golang/go/compare/go1.26.5...go1.26.6
[2] https://groups.google.com/g/golang-announce/c/94pEornpRlI

Signed-off-by: Peter Marko <peter.marko@siemens.com>
---
 meta/recipes-devtools/go/{go-1.26.5.inc => go-1.26.6.inc}   | 2 +-
 ...o-binary-native_1.26.5.bb => go-binary-native_1.26.6.bb} | 6 +++---
 ...cross-canadian_1.26.5.bb => go-cross-canadian_1.26.6.bb} | 0
 .../go/{go-cross_1.26.5.bb => go-cross_1.26.6.bb}           | 0
 .../go/{go-crosssdk_1.26.5.bb => go-crosssdk_1.26.6.bb}     | 0
 .../go/{go-runtime_1.26.5.bb => go-runtime_1.26.6.bb}       | 0
 meta/recipes-devtools/go/{go_1.26.5.bb => go_1.26.6.bb}     | 0
 7 files changed, 4 insertions(+), 4 deletions(-)
 rename meta/recipes-devtools/go/{go-1.26.5.inc => go-1.26.6.inc} (90%)
 rename meta/recipes-devtools/go/{go-binary-native_1.26.5.bb => go-binary-native_1.26.6.bb} (80%)
 rename meta/recipes-devtools/go/{go-cross-canadian_1.26.5.bb => go-cross-canadian_1.26.6.bb} (100%)
 rename meta/recipes-devtools/go/{go-cross_1.26.5.bb => go-cross_1.26.6.bb} (100%)
 rename meta/recipes-devtools/go/{go-crosssdk_1.26.5.bb => go-crosssdk_1.26.6.bb} (100%)
 rename meta/recipes-devtools/go/{go-runtime_1.26.5.bb => go-runtime_1.26.6.bb} (100%)
 rename meta/recipes-devtools/go/{go_1.26.5.bb => go_1.26.6.bb} (100%)