[chore] Skip dbstorage extension tests on Windows GH runners

[pjanotti]

Fixes #36212

This is caused by the fact that on Windows GH runners Docker is set to run Windows containers, the test passes on Windows when running Docker is set to run Linux containers. Notice that it consistently leaks a goroutine:

=== RUN   TestExtensionIntegrityWithPostgres
2024/11/07 12:01:04 (1) [] port not found
2024/11/07 12:01:05 (2) [] port not found
2024/11/07 12:01:05 (3) [] port not found
--- PASS: TestExtensionIntegrityWithPostgres (16.42s)
PASS
goleak: Errors on successful test run: found unexpected goroutines:
[Goroutine 20 in state syscall, locked to thread, with syscall.SyscallN on top of the stack:
syscall.SyscallN(0xc00010e298?, {0xc0002a1410?, 0x7ff7b9bdb0c0?, 0xc00010e240?})
        C:/Users/pjanotti/go/pkg/mod/golang.org/toolchain@v0.0.1-go1.22.0.windows-amd64/src/runtime/syscall_windows.go:544 +0x107
github.com/Microsoft/go-winio.getQueuedCompletionStatus(0x208, 0xc0000a1f8c?, 0xc0000a1f90?, 0xc0000a1f98?, 0xffffffff)
        C:/Users/pjanotti/go/pkg/mod/github.com/!microsoft/go-winio@v0.6.2/zsyscall_windows.go:327 +0xbb
github.com/Microsoft/go-winio.ioCompletionProcessor(0x208)
        C:/Users/pjanotti/go/pkg/mod/github.com/!microsoft/go-winio@v0.6.2/file.go:162 +0x85
created by github.com/Microsoft/go-winio.initIO in goroutine 19
        C:/Users/pjanotti/go/pkg/mod/github.com/!microsoft/go-winio@v0.6.2/file.go:58 +0x5d
]
FAIL    github.com/open-telemetry/opentelemetry-collector-contrib/extension/storage/dbstorage   17.344s

this PR doesn't address the goroutine leak.

[songy23]

Please rebase. The unrelated build failures should be fixed with #36266